Fullerton, Simpson of Killyman

Hi there I'm interested in any information about these families:

Robert Fullerton bap. 9 Apr 1794 Killyman Church of ireland. Parents Robert Fullerton & Elizabeth Fullerton.

He married Ellen Simpson bap. 3 Dec 1796 Killyman Parish Church. Her parents were John Simpson & Susannah (surname unknown).

Robert Fullerton & Ellen Simpson married 25 mar 1817 Church of ireland, Killyman.

They had 3 children that I know of: William bap. 18 Aug 1818, Killyman, John bap 1 Oct 1821, Killyman (my GGG Grandfather), Thomas bap 5 Sep 1826, Killyman.

Of these children:

John married Elizabeth/Betsy/Bessie Newell (sometimes listed as Revell, but I'm pretty sure it's Newell), daughter of Thomas Newell. They married 10 Sep 1845, Episcopal Church of ireland, Killyman. They had 3 children that I know of: Eleanor/ellen, 1851, Mary Jane, 1853 (she died in Glasgow, Scotland), John, 1855. Very interested to know if they had any other children. I presume they died in Killyman Parish, but have found no details yet.

Thomas married Sarah McAnally 30 Aug 1848, Church of Ireland, Killyman. I believe they had children Frederick, 1865 and Ellen Jane 1867, but am very interested to know if they had a son Thomas, or any other children.

Any information would be very much appreciated.

Craig