William Fullarton was Archdeacon of Armagh from 1633"Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 3" Cotton, H. p44 Dublin, Hodges & Smith, 1848–1878 until 1655.
Fullarton was ordained in 1628. He was a Prebendary of Carncastle in the Diocese of Connor he held livings at Termonfeckin, Derrykeighan, and Ahoghill."Fasti Ecclesiae Hibernicae: The succession of the prelates Volume 3" Cotton, H. p271Dublin, Hodges & Smith, 1848–1878
He married Jeane, daughter of Bishop Robert Echlin:"A genealogical and heraldic history of the landed gentry of Great Britain" Burke, B p498: London; Harrison;1879 they had 9 children (Robert, William, John, Jeane, Margaret, Euphiam, Isobel, Mary, and Agnes).Echlin, John R.. Genealogical memoirs of the Echlin family. Edinburgh: Scott & Ferguson, 1882
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