I am responding because my 2nd great grandfather Henry Fairfield b 1780 was living in Grimsby, Canada West (now Ontario) when my grandfather Abraham Matthew Fairfield was born in 1824. Census data of the children show Henry being born in Ireland. DNA testing shows a close relationship with the Wenham family but we can find no branch with a Henry or any other relationship with Ireland. Is it possible that your research could help make a connection? I would be happy to share what data I have if it would be of interest to you.