Since I have not done any research in Canada I was hoping some somebody knowledgeable in Canadian research might be able to make a few suggestions. A friend is researching his O'Henry family but has only been able to go back to his GGG Grandfather James O'Henry who was married in 1841 in York, Ontario. James O'Henry came from the north of Ireland, but the county is unknown, but is believed to be County Tyrone. Unfortunately there are a lot of Henrys in Tyrone in the Griffith's Valuatuion. What is the best way to go beyond the 1841 marriage date in Canada? Go raibh maith agat for your help. Beannachtai, Margaret (Mairead)