Our Missionaries

The work One Mission Society missionaries do every day goes beyond that of your average day job. Through the application of biblical principles, the people of OMS bring both physical and spiritual hope to thousands around the globe. Find out more about what our missionaries from the UK are doing around the world by clicking on their profiles below. If you’re interested in joining us and being part of what God is doing through OMS, you can discover more on our Opportunities page.

Bruce and Mabel Callender – Mozambique ►

callendersMabel, who is from Ireland, first joined the staff of OMS in 1964 to work in the medical clinic in Saraguro, Ecuador. Bruce and Mabel met when he visited Ecuador in 1967. They were married in 1970. A graduate of Emmanuel Bible College in England and the Missionary School of Medicine, Mabel received her master’s degree in social sciences in 1989 from Azusa Pacific University.

Bruce is a 1973 graduate of Fort Wayne Bible College with a B.A. degree in missions. He continued his studies at London Bible College and earned a diploma in theology in 1972 and a B.D. degree in 1982 from the University of London. He studied for one year in the School of World Mission at Fuller Theological Seminary.

Bruce and Mabel both taught in the Sinai Bible Institute in Carboncillo in the Southern Andes Mountains, training young Ecuadorians for church leadership in the remote southern mountain region of Ecuador. They were on the original team of missionaries that founded the Christian Bible Church in Guayaquil in 1986-1995.

In 1995, after serving for many years in Ecuador, Bruce and Mabel accepted the challenge to lead the OMS missionary team which entered Mozambique in 1996. Both served in the founding of the Christian Academy in Mozambique, a school for missionary children, and the Biblical and Theological Seminary of Maputo for the training of pastors and church leaders. The team’s labours in evangelism and church planting brought about the registration of the Living Word Evangelical Church, the first organized OMS-related church in Africa. When Bruce and Mabel finished their assignment in Mozambique in August 2006, there were 13 churches throughout the country and the building for the seminary was nearing completion.

The Callenders have four grown children who have assisted in the family’s missionary endeavours. They have also two grandsons. Bruce and Mabel retired at the end of 2008 but remain involved in the mentoring of OMS leadership. Bruce and Mabel were asked to return to Mozambique for the dedication of the Biblical and Theological Seminary of Maputo building, which took place on August 15, 2009.

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Daniel and Gail Castro – Spain ►

castrosGail grew up in the North East of England. She came to the Lord at age 13 at a youth camp. After completing her theological training at Northumbria Bible College she felt a call for missions. In 1990 she left for Costa Rica for language training and in 1991 to Bogota, Colombia.

Having been born in Colombia into a Christian family Daniel felt the call to serve the Lord since he was in his early teenage years. In 1987 he enrolled the Seminario Biblico de Colombia, a theological Seminary founded by OMS. In 1991 he finished his studies and went to work in the Christian Fellowship church in Bogota. There he met Gail and got married in 1993.

Daniel and Gail served in Colombia with OMS for 16 years in Church Planting, Bible Training, worship and Social Ministries. In 2007 they returned to the UK for home assignment and a period of further Theological training. After completing their studies they felt God directing them to work in Spain where OMS has been serving since 1972.

The Castros share a passion for presenting God’s message in challenging and relevant ways and a commitment to church development and the training of Christian leadership. These are central to their ministerial involvement in Spain where they serve in a local church in Madrid. They are also part of a church planting team in the town where they live.

Daniel and Gail have two daughters, Melissa and Ruth, both born in Colombia.

Bible verse:
“For God, who said, “Let light shine out of darkness”, made his light shine in our hearts to give us the light of the knowledge of the glory of God in the face of Jesus Christ. But we have this treasure in jars of clay, to show that this all-surpassing power is from God and not from us.” (2Co 4.6, 7)

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Donald Coulter – Ireland ►

Donald CoulterDonald gives leadership to the OMS Ireland Field. He works closely with OMS workers and partners in Ireland. His passion is to ensure that everyone in Ireland has an opportunity to hear, understand and receive the gospel, with a commitment to on-going discipleship to those who come to know the Lord. OMS partner with the evangelical church in Ireland to see churches planted where they are required.

Previous to this, Donald served as the OMS Regional Director for Northern Ireland, and for a period as the UK Executive Director.

Prior to joining OMS, Donald worked in the agricultural input industry, the largest industry in Northern Ireland, for 30 years, before being called to leave the secular workplace and go into full-time Christian ministry.

Married to Lorraine since 1982, the Coulters have three married adult children and six grandchildren.

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Eddy and Chris Delameillieure – Belgium ►

delameillieureThe one call to make disciples of all nations eventually brought Chris and Eddy back to Belgium, from where they originally came. Their missionary journey started in 1984 in Holland with Healthcare Christian Fellowship (HCFI), a mission which focusses on evangelising healthcare professionals. There they served at the European HQ of the mission until, in 1990, they moved to England where they worked for over 15 years, partly to pursue theological and mission studies in London. From 2006 to 2011, Eddy served as an OMS missionary in Madrid, teaching at SEUT, one of the few Protestant Bible Colleges in Spain. In 2011 they moved back to Belgium in order to care for Chris’ ill mother.

Eddy continues his ministry within the remit of OMS as the People Group Director for Belgium. It was God’s timely provision, when returning to their home country after living abroad for 27 years, to place them in a Spanish-speaking church in Ghent. Not only had they mastered the Spanish language when in Spain, most of the church members come from Latin-America, a Castilian variant which is more easily understandable than the Spanish spoken in Madrid. Now, both Chris and Eddy serve as pastors of this church. Their vision to see Christians mature in discipleship hasn’t changed since their stay in Spain. It has found a very specific application within the open and needy immigrant Latino communities in Belgium. In line with the OMS Across Europe vision, they are working towards multiplying Christian witness within these communities using the Antioch vision, a model first practised in Antioch where Christians originating from different cultural backgrounds managed to worship together in unity. All of the services are conducted in two languages: Spanish and Dutch. As people from Brazil join their numbers, songs in Portuguese feature as well.

Chris continues to work with HCFI at a national and international level. Nationally, her task is to promote the HCF vision across the healthcare fields of Belgium. She is now also heading the special task force of the Evangelical Alliance of Flanders to counter the increasing slide towards legalising euthanasia in this country. Internationally she serves as a training and development consultant for the mission. Eddy in turn functions as the theology consultant for HCFI. In this way, in the lives and ministries of Eddy and Chris, two missions, OMS and HCFI have come together.

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Bill and Julie Edler – Haiti ►

Bill and Julie EdlerBill and Julie Edler, missionaries with One Mission Society, are currently funding candidates and hope to serve at Emmaus Biblical Seminary near Cap Haitien, Haiti from Summer 2016.

Emmaus Biblical Seminary exists to teach, equip, and empower the future leaders of the Haitian church. Bill will be a lecturer in the seminary, focusing on the New Testament. Julie will be a mother, while also working part-time as a physiotherapist at Bethesda Medical Clinic.

Julie grew up in Bangor, Northern Ireland, and Bill is from Youngstown, Alberta, Canada. They met while serving with OMS in 2010 and were married in 2011. They have two sons, Sam (b.2014) and Joel (b.2016). Read our blog at bjhaiti.blogspot.com.

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Michelle Heffer – Mozambique ►

Michelle HefferMichelle has been serving with OMS in Mozambique since August 2016. Before this, she worked as a Paediatric Nurse and Health Visitor in England. She is based on the outskirts of the capital city, Maputo, where she serves in various church based ministries. Her primary focus is the Helping Hands ministry: a ministry which seeks to mobilise the local church to reach out to those living with disabilities in their communities. She spends time visiting families, alongside church volunteers. and also heads up a monthly group for parents who have a child with a disability. She is also passionate about health education and has started to run some basic courses in the churches, combining health education and discipleship. Michelle is involved in supporting a church in the Picoco community, where she regularly preaches.

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Julia Henry – Ecuador ►

Julia HenryJulia Henry, from the UK, served short term with One Mission Society in 2002 and 2004. She worked in Cuena and Saraguro, Ecuador, and then moved to Yantzaza in 2006. Working alongside an Every Community for Christ church planting team, she was involved in ministry with the children, youth, and women.

In 2011, Julia moved up to the city of Cuenca, where there are many people who need to know the love, hope, and transformation that the Good News of Jesus Christ can bring to them. Julia has been involved in evangelism and discipleship amongst the children and women as well as being a part of the ministry in the women’s prison and seminary.

“Clap your hands, all you nations; shout to God with cries of joy. How awesome is the Lord Most High, the great King over all the earth!”
Psalm 47:1–2 (NIV1984)

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Melvin and Sharon Kelly – Mozambique ►

kellysMelvin & Sharon Kelly from Northern Ireland are OMS missionaries to Mozambique.

Sharon, originally from Kilrea, Co. Londonderry grew up in a Christian home and committed her life to Christ at the age of six. Since she was a teenager, she has had an active involvement in outreach at home and short term mission overseas. She taught Geography at Ballymena Academy until she felt God’s call to work for the Wash Basin, a Christian community centre in Ahoghill. She was involved in a variety of discipleship, pastoral and outreach ministries, which included leading a GAP year programme, an English ministry to ethnic minorities and woman’s evangelistic outreach. It was through the Wash Basin that Sharon first came into contact with OMS International. During her ministry there she organized and led four teams to Mexico City.

Melvin, from Aughnacloy, Co. Tyrone was also brought up in Christian home. At the age of eleven, he became a follower of Jesus. He matured in his walk with God and developed a passion for mission while at university, where he was actively involved in the Christian Union. After graduation, Melvin worked for the Belfast based company, Farrans Construction until God called him to use his construction training and experience to serve Him in Mozambique. He joined the Mozambique OMS team in April 2004, where he spent almost three years overseeing construction projects, including the Maputo Bible Seminary.

After Melvin and Sharon got married in August 2007, they desired to seek God’s will for the future. As part of this desire, they spent three and a half months in Mozambique from August to December 2008. Upon their return from Mozambique they felt God’s leading to return to Mozambique to serve for as long as the Lord required.

Melvin and Sharon’s passion is to see Christ transform lives and communities in Mozambique, in partnership with the church, through the establishment of strategic sustainable ministries, reaching out into their communities with the transforming message of the Gospel. An integral part of this vision was the birth of the TLC (Transforming Lives and Communities) charity which is the umbrella for Girassol charity shop in Antrim which aims to shine Christ’s light in both Antrim and Mozambique. The money generated from Girassol helps fund ministry in Mozambique.

In December 2009 Melvin and Sharon were blessed by the arrival of twins Abigail and Joshua. On 20th September 2010 the family moved to Mozambique. Noah (March 2012) and Lydia (November 2013) have since brought much blessing to the Kelly family. Melvin is currently Team Leader and is developing ‘Helping Hands’. Sharon is involved in partnering with Nkateko.

Maõs Ajudando (Helping Hands) is a ministry of Igreja Evangelica Palavra Viva (The church of the Living Word), with whom OMS partners in Mozambique. Helping Hands desires to empower the church to reach out in both word and deed to people living with disability. This group of people are among the most marginalised in Mozambique. Currently Carlos Njango and Melvin co-ordinate the program, training and mobilizing church volunteers to befriend those in their communities living with disability and their families. A workshop has been established at the Khongolote church where wheelchairs are modified and repaired. Two workers, Victor and João, are employed. Wheelchairs have been imported from Northern Ireland and are being donated through the church to those in need.

Nkateko, which means blessing, exists to see Christ transform lives and communities in Mozambique through discipleship, entrepreneurship and practical skill training. Its three objectives are:-

  1. To foster a Biblical understanding of how we are blessed by God to be a blessing to others.
  2. To create a sense of community where participants share and support one another.
  3. To empower participants as they develop skills and use their creative abilities to support themselves, their families, their community and the church.

The items that the ladies make are sold both inside and outside the country. (www.nkateko.co.uk; find us on Facebook- nkatekotlc)

Melvin and Sharon value your prayers as they serve in Mozambique. You can access their prayer letters on their blog melvinandsharonkelly.blogspot.com.

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Walter McCorkell – UK Executive Director ►

Walter McCorkellWalter has a 30 year career history of service as a senior manager and operational scientist within the Northern Ireland Civil Service. He is a serving Elder within the Presbyterian Church and has been a Sunday School Teacher and Superintendent, Youth Club Leader and Mission Committee convenor within his home congregation of Strean Presbyterian Church, Newtownards, Northern Ireland, frequently taking church services and preaching God’s Word both at home and abroad.

Prior to joining OMS in 2015, Walter and his wife, Rosie, spent four years in full time missionary service in Mozambique with the Africa Inland Mission. During this time, they built their own house deep in the African bush, built a Bible School, and faithfully ministered to and discipled five mud-hut churches in the area associated with the Uniting Church of Christ, American Board, in Mozambique. They have three grown up daughters, two grandsons and one granddaughter.

Walter, in his role as UK Executive Director, works from the OMS Belfast office and commutes to the Headquarters in Manchester on a regular basis. Pray that God will continue to bless this appointment, and that through it His Kingdom will be extended and grown, and the work of One Mission Society developed.

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Trevor Morrow – Northern Ireland ►

Trevor MorrowTrevor, and his wife, Christine, served in their local church, as well as in different departments within the Association of Baptist Churches in Ireland. In 1992 they began missionary service in Peru, South America which involved evangelism, church planting, training leaders, counselling and teaching, as well as directing a Camp and Conference Centre ministry. Their service continued until 2018 and then Trevor joined the OMS family upon appointment as the UK Personnel Officer, as well as Area Representative for Northern Ireland. Trevor and Christine are passionate about God’s Mission to share the message of the Gospel at home and around the world. Pray as they seek to encourage and mobilise others to be involved in God’s Mission.

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Storly and Kate Michel – Haiti ►

michelsStorly, Kate, Hannah and Esther have been supporting the Haitian people for more than 18 years. Storly is the station manager at Radio 4VEH. He presents several programs, including daily 15-minute Bible reading Bib la an Ayisyen, Sunday morning devotional Cascades. He is also the Creole producer for TWR’s Thru The Bible 5-year bible study radio series (by J. Vernon McGee).

Kate serves as Marketing & Communications director for Radio 4VEH, and for the Resounding Hope solar radios initiative. Through stories, photos, speaking engagements, newsletters, websites, social media and more, she leads fundraising efforts, shares prayer requests and praises, and reports back to supporters on how people are being drawn to Jesus through the radio ministry.

And Hannah and Esther share their joy and passion for life with everyone, getting involved in radio stuff as much as they can, learning and sharing their own versions of the stories they hear. They make great spokespeople for the ministry!

You can keep up with their latest news by following their blog.

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Jonathan and Lupita Morton – Indiana, U.S.A. ►

mortonsRev. Jonathan Morton, Director of International Ministries, is from the United Kingdom. He joined One Mission Society in December 1994. After studying language for one year in Costa Rica, he was assigned to Mexico. It was during his first two years of ministry in Mexico that he met Lupita. In July 1997, they were married.

Jonathan and Lupita started the OMS Mexico social outreach evangelism and church planting programme. This is a ministry that uses social outreach tools, such as medical work, drug rehabilitation and breakfast clubs as a way to meet people at their point of need, build friendships and share Christ with them. As a result of the social outreach evangelism, different churches in Mexico have experienced growth while new churches have been established and planted.

Since 1999, the Mortons’ main ministry focus has been planting new churches. Through different evangelism methods, people are won to Christ, new churches are established and local Mexican leaders are trained to effectively reach their own nation for Christ. Jonathan and Lupita were not only involved in directly planting churches, but from 1999 to 2006, they also were responsible for the overall leadership of church planting in Mexico through Every Community for Christ (ECC) ministries. Jonathan served as the Field Director for Mexico from 2006 to 2008.

On August 13, 2008, God called Jonathan and Lupita to serve at the OMS World Headquarters in Greenwood, Indiana. Jonathan serves as the Director of International Ministries, responsible for OMS vision, ministries and staff in Latin America, The Caribbean, Asia and Europe. Lupita serves as a homemaker and through pastoral and ministerial visits throughout these regions.

They have two sons, Daniel (2010) and Noah (2012).

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Jonny & Julie Pollock – Republic of Ireland ►

the pollocksJonny and Julie Pollock and their family currently serve God with OMS, partnering with Calvary Mission, in the West of Ireland.

Julie was raised in Northern Ireland and came to faith in Christ as a young girl, and from an early age demonstrated a passion and burden for mission. This led to involvement in many Christian endeavours and mission trips to Brazil, Kenya and Hungary. Jonny is from Belfast and came to faith when he was 21. He was antagonistic to the Gospel, Christians and God, yet was gloriously saved after being given a Bible to read while at university. They both trained, qualified and worked as nurses through Queen’s University Belfast.

Their first missionary involvement was with an OMS team to Mexico in 2006, and following that, they felt led by God to serve in Mexico with OMS for a one-year term. After returning home to have their first child, Benjamin, in 2008, they returned to Mexico for a further period of service. Returning home in 2009, Jonny pastored a church in North Belfast, and Julie returned to work. They welcomed two more sons, Joshua in 2010, and Caleb in 2013.

One of their great burdens is to share God’s Word with people who have little or no access to the Gospel, something which has since led to a passion for the Republic Of Ireland. They have been serving God in Ireland with Calvary Mission since June 2015, and are involved in planting a new church in the town of Loughrea, County Galway, and the training of Irish believers to further the work of God in Ireland.

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Leslie and Brenda Reid – Mexico ►

reidsLeslie & Brenda, along with their two children, Darina and Liam, are serving with OMS in Mexico City. Leslie, from Northern Ireland, and Brenda, a Mexican national, are on their second term of service with the Mission. Leslie is ministering with a national church called UNIFAM (Families United in Christ) in an area called Cuautitlan. He is in a support role, ministering alongside a national Pastor. Brenda is involved in ministry at home, as she home-schools Darina and Liam. She is also involved in ministry in pastoral care with both missionary ladies and nationals. Pray for the family as they see so much need, both within the body of Christ as well as outside of it. Pray too for health and safety as they serve the Lord and the Mexican people.

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Philip & Fiona Richardson – USA ►

the richardsonsOMS missionaries Philip and Fiona Richardson are based at OMS World Headquarters in Greenwood, Indiana. Philip has a passion for engaging people with the Bible and helping them interpret it within its original contexts and apply it to their own situation. He will work with the Theological Education team to come alongside the many Bible colleges, seminaries and training programmes around the world that partner with OMS. He will also have opportunities to teach and equip international church leaders through building online resources for in-depth Bible knowledge and understanding. He is excited to see what God will do through these leaders, who will become leaders of leaders and teachers themselves all over the world.

Fiona’s passion is to equip and encourage people as disciples and disciple-makers. She delights in building up leaders to work with women by developing written resources, training trainers and praying for God’s transforming Spirit to move in the nations. She also loves to pray with and for missionaries through the OMS World Intercessors team.

Philip and Fiona are from England. After volunteering and working with churches there, they began a partnership with a mission agency (Crosslinks). In 2002, they moved to work under the Anglican Church for a region of churches in Tanzania, East Africa. While there, they adopted their two precious daughters – Bethany (born 2003) and Jasmine (born 1997). They spent several years training pastors, lay leaders, young adult leaders, children’s workers, and women’s leaders through teaching, building teams, and writing resources until they left in 2010.

God opened up the way for Philip to study for a Ph.D. in Biblical Studies at Asbury Theological Seminary in Wilmore, Kentucky; a huge blessing to all the family. Fiona continued prayer ministry, writing resources, speaking, training, leading Bible studies, with a women’s ministry in the U.S., while continuing to work on publishing and distributing Bible study resources for young women’s ministry in Africa. Philip enjoyed opportunities to teach at the master’s level during his time at the Seminary and grew in his love for building up leaders all over the world as he studied among many internationals.

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Robin Sloss – Republic of Ireland ►

robin-slossRobin began full time service with One Mission Society on 1st January, 2014 as Men for Missions UK National Director. God used the verse in Mark 1:17 “…Come after Me, and I will make you become fishers of men.” In May 2017 the Mission asked him to take up the role of Prayer Ambassador.

Robin came from a farming background and also worked in a factory before completing three years at Belfast Bible College. He then spent a number of years working in a local family-run supermarket. During these years he graduated from Cranmer Memorial Bible College with a Bachelor of Theology.

Robin is married to Audrey and they have two grown up daughters, Stephanie [married to William], and Leanne.

Prayer is the most important work that we as believers are called to do.

Read our blog at theslossfamilymfm.wordpress.com.

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Mark and Nube Vogan – Ecuador ►

vogansMark and Nube lead a Church-planting team in the marginalized areas around Loja City, Ecuador. This includes the Biblical Christian-Community of Chontacruz which meets key needs in integrative ministries to the whole person. Nube trains a team that reaches children and their families through weekly Bible Clubs. Mark preaches, assists in administration, logistics, and both Nube and Mark train leaders for Home Bible Studies (future churches) and Evangelism. They help Radio Hope, which assists church planting with evangelistic and Bible teaching programmes. Their children, Timothy, Deborah and Samuel are very much part of the ministries, as well as continuing their education in local and mission schools.

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Carl and Heidi Walton – U.S.A. ►

waltonsCarl and Heidi Walton began their missionary career with One Mission Society in 1994. They served in Haiti during their first term. Carl was Field Treasurer and Heidi worked in the OMS medical clinic.

The OMS office in Manchester, provided their next opportunity for service. Carl served as Treasurer, and he took several trips to India to assist the Evangelical Church of India in their financial needs. Heidi was Personnel Officer. They served in these roles for nearly six years.

The Waltons next opportunity lay in the Philippines, where they worked closely with Every Community for Christ evangelism and church planting teams, and with OMS church pastors.

In 2006 they moved to the OMS World Headquarters in Greenwood, Indiana. Currently, Carl is responsible for payroll, and Heidi serves as the President’s Administrative Professional.

The Waltons have four adult children and three grandchildren.

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