I have no sibling info for Jane Clark, a Protestant (much sketchier info than RC!) , b in Donegal about 1796. I only have Jane Clark as married to Abraham Farrell, parents of John Farrell. Trouble is, after John Farrell b. 1821 in Donegal, was married in Kingston, Ontario, in 1845, (to a RC Mary O'Gara), he disappears, and she remarries. Not at all sure he dies, tho. I'm exploring whether Jane was married to Clark before Abraham, and that Clark was the birth father of young John.
Good advice to post details. I'll do that on an appropriate board. Thank you so much.