Wm. is my great grandfather and was born in Cty Monaghan, in Newbliss Parish. That is my sum total of his home beginnings. He and his wife Jane Elizabeth immigrated to Ontario to Grenville County in either 1828 or 1829 as he and wife are listed in the 1829 census of Augusta Township. I am trying to locate where his birth location was exactly and if there were siblings that stayed in Ireland. I had always thought that his wife's maiden name was Mayne but have recently found a paper staing Greer??? How can I best start the search process from my Canadian side of the big pond? Suggestions would be appreciated.

Ronald