Background
Prosser was born on 10 June 1868.
Prosser was born on 10 June 1868.
He was educated at Llandovery College in Llandovery, Carmarthenshire, west Wales, before entering Keble College, Oxford, with a history scholarship.
He obtained a third-class degree in modern history in 1891 and was then ordained deacon in 1892 and priest in 1893. He served as assistant curate of Holy Trinity, Aberystwyth (1892-1896) and Christ Church, Swansea (1896–1909) before being appointed vicar of Pembroke Dock in 1909. He was additionally appointed Archdeacon of Street David"s in 1920.
In 1927, he was consecrated as Bishop of Street David"s, a post he held until his death on 28 February 1950.
He was also Archbishop of Wales from 1944 to 1949. He was appointed an Honorary Fellow of Keble College in 1949.