I am searching for information on Mary McCaslin/Caslin. I have seen her last name spelled both ways. She was born circa 1814 in Ireland -- this I do know from the US Census.
She married Patrick Owen, probably in Ireland. Eventually they ended up in Howland, Penobscot County, Maine. They were their by 1835. Their first child Henry, born in Oct. of 1834. The US Census indicates that he was born in Maine.