Canon Derek Waller, on behalf of Bishop Hilary of Yei, South Sudan, a diocese celebrating a centenary next year, seeks to trace any descendants of Canon Paul O’Bryen Gibson, the first CMS missionary to Yei, later Archdeacon of Southern Sudan, Secretary of the Southern Sudan Mission, and from 1957 Rector of Wingfield. He was married to Mary Wingfield. Canon Waller can be contacted by email at revdwaller@gmail.com.