Hi, on my paternal grandmothers side we have the name Finn - this is what I have so far.
Jeremiah Finn (b 1816 Ireland) married Mary ? (b 1831-4, Rockfield, Ireland). Their children were Daniel, Dennis, Mary, Cornelius (b1863), Ellen (b1866) and Jeremiah
Cornelius married Sarah Jane Collins *b1870) and had the following children - Beatrice, Leonard, Richard, Herbert Stanley, May, Ellen, Norman and Mildred.
( Herbert married Francis Audrey Tonkin, my great grandmother)
Ellen married ? Hutchinson and lived in Australia for some time. They had a child, Mabel, born in Australia and then he must have died and she came back home with her child as a widow, to live with her mum, Mary.
Hopefully there will be a link somewhere!