Thanks for your response to my query. It does seem very likely that there is a connection with our Thomas who was born in about 1799. I haven't found a baptism record for him yet but will search with the Flue Ellin name which may give a result. It seems that the family might have come from Yorkshire. Thomas Flewellin married Elizabeth Wilson at Castlecomer on May 07, 1826. I have found the baptisms of all their children and Thomas's burial record. Thomas and Elizabeth's 7th child, Samuel Flewellen, was my husband's great grandfather. He joined the Irish Constabulary and later emigrated with his wife (Susannah Brown) and small son to New Zealand in 1880.