I have Elizabeth as my 4th GGM. I also have her parents as Mathew (b 20 Sep 1719 in Galston, Ayr; d. Est 1779 in Kilmanrnock. m. Elizabeth Gilles/Gillies/etc. abt 1744. She b. abt 1723 Beith, Ayr, d. Aug 1749 Kilmarnock. 5 children. Matthew then married Ann Donaldson (b. 1725, d. abt Dec 1755) on 5 Dec 1750 in Kilmanrnock. 3 children. Matthew then married Margaret Brown (no dates) on 23 Feb 1756. 9 more children (total 17), Eliz. the eldest. Probably why she left home. 1st 2 wives probably died of problems in childbirth.