this is all I know about Nicholas. he m. a Catherine and they had at least one child, James, b. 10 Nov 1835 in Belfast.
James came to America and settled in Worcester Co., Massachusetts where he married on 3 Jan 1878 to Ellen Flynn who was born 26 Dec 1854 in Leitrim, Ireland, the daughter of Terence Flynn and Bridget.
James may have married previous to Ellen as I find a James Thornton b. 1835 Ireland in the 1870 Worcester, MA census with a wife Margaret Franzen and 3 children. we don't know what happened to Margaret and the children.
James and Ellen had at least 8 children, Katherine Marie aka Katy, Ella, Anna Elizabeth, Helen aka Nellie, Jane, Margaret Gertrude, Nicholas F. and John aka Johnny.
can anyone fill out this family tree?