lbathgate...hehe, I was using my Thomas' kids as an example, because I remembered off the top of my head that he had two children named after grandmothers.OK - you've got me interested now!....who is your Margaret McCulloch? Do you know her d.o.b? place of birth? And who was Thomas Carson's father-in-law?
Thomas Carson, son of John Carson (b. 1830-35 Ireland) and Mary Hyslop (b. 1833 Ireland) was born in Ireland about 1852, likely in Co. Down.
In 1873 he married Elizabeth Crombie in Rathfriland, Ballyroney, Co. Down, Ireland.
Elizabeth (b. about 1852) was the daughter of James Crombie and Margaret McCulloch b. about 1825.
Thomas' daughter Margaret McCulloch Carson was born in 1882 in Irvine Ayr.
I take it you may have thought you have a connection. If so, please don't hesitate to PM me.
Nina