Educated by his father and at the University of Oxford, he graduated BA from Magdalen Hall in 1833 and MA in 1835.
Following admission to deacon´s order, he was appointed curate of St Petrox, Dartmouth, and ordained priest at Exeter in 1834.
[1] He returned to Australia in 1836 and was made chaplain at Port Stephens, New South Wales where he remained for 20 years.
[1] He several times acted as commissary for bishops Frederic Barker and Alfred Barry during their absences in England.
Cowper died, aged 91, at the Deanery in Sydney on 14 June 1902,[1] and was buried at St Jude's cemetery, Randwick.