Here's the descent:  James Matthew Rankin, born in Tyrone, County Galway, somehow got to Jamaica.  There he married Rachel Maria and had a number of children, one of which was christened at St Thomas in the East (a C of E church) along with three other children, all registered 16 September, 1827. One of those children, John Thomas Rankin, foolishly moved to New York, married a Canadian woman, the…