[4] He was born on 22 September 1881,[2] the son of a priest (C. Duppuy), and educated at Keble College, Oxford.
[5] He was ordained in 1904 (the last year before the Diocese of Birmingham was founded)[6] and his first post was as a curate in Aston;[7] after which he was Vicar of Christchurch, Bradford.
[8] Duppuy was released from his post in Bradford to serve for 13 months as a Temporary Chaplain to the Forces from January 1918.
He was described in his interview with the Chaplain-General as ‘manly, quick, keen...’ and was posted to France attached to the 42nd Division Royal Artillery.
Appointed Bishop of Victoria, Hong Kong in 1920,[11] he was consecrated into bishop's orders on St John the Baptist's Day 1920 (24 June), by Randall Davidson, Archbishop of Canterbury, at St Paul's Cathedral.