[4] He served his title (curacy) at St Andrew's, Stoke Newington until 1938, when he became an Assistant Chaplain at Missions to Seamen in Southampton.
[2] Returning to England, he served as Rector of Stoke Bruerne with Grafton Regis and Alderton (Diocese of Peterborough), 1953–1956.
His next postings were in Canada: as Chaplain to Missions to Seamen in Toronto; and — additionally — as Rector of St Stephen's Church in the same city (from 1958).
[1] In a joint initiative of the Canadian and West Indies Anglican churches,[5] Marshall was elected in 1967 a bishop suffragan in the Diocese of Trinidad and Tobago, with responsibility for missionary activities in Venezuela.
[6] Marshall resigned his See in 1974, and was appointed Assistant Bishop of Peterborough and Vicar of Blakesley with Adstone.