Hi
Robert Corlett & Elizabeth Cottier are my direct ancestors.
I believe that Elizabeth Cottier is the child of David Cottier & Catherine Kelly and she was baptised in Marown 2/8/1778.
This is supported by Catherine Kelly's father Thomas Kelly's will-
Marown will summaries
1791-1 E w KELLY Thomas dated 6 jun 1789;trollaby;sons wm,thos,john;dau margt key,cath cottier(+dau elizth);sis ann kelly;wife margt als curghey;dau jane gelling als kelly exex(w/o robt)

Hope this helps
Carol