On 14 March 1907, the two married at St Mary's church in Walton-on-Thames,[6] with their marriage certificate showing the professions of both Clark and Whitten as Cinematographers and living in Walton at that time.

[8] In about 1913, Whitten and Clark moved to Dublin where he set up his own film-making facilities in offices at 17 Great Brunswick Street.

[12] His 1920 début feature film Aimsir Padraig (In the Days of St Patrick) starring Ira Allen and featuring his son Vernon Whitten as a young Patrick[2] showed the life of Ireland's patron from birth through slavery and then returning to Ireland as a Christian missionary[13] and enjoyed international success.

[8] In 1922 Whitten produced a series of light comedies: Casey's Millions, Cruiskeen Lawn and Wicklow Gold starring the Irish comedian and variety artiste Jimmy O'Dea.

[8][19] Whitten's marriage to May Clark was dissolved before 1929 as in that year he married Hilda Pleasance (1904–1962) in Bury St Edmunds in Suffolk.

[20] In 1939 he and his second wife were living at 54 Girton Road in Ealing in London where Whitten was a Patent Medicine Advertising Manager and was also an ARP Warden.