need help tracing my family from Ireland

Hello to all from Canada

        Looking for these families Cornilius O'Brien born abt 1743 in the Parish of Nenagh,northern Tipperary County Ireland. He was a soldier who fought in the American Revolution. He came to Canada on the HMS Surprise.He inlisted in the 29th Regiment of Foot in 1776.He arrived in Canada in 1776 , by 1794 he transfered to the 60th Regiment 1st Battalion then a member of the 10th Royal Veterans Battalion. We know about hime from about this time but nothing before he came to Canada only were he came from in Ireland.We have no information on any of his family when he live in Ireland. If anyone can help I would be ever so great full.

      I'm also looking for the family of Kelly's . Patrick Kelly was born in Ireland in 1837 we do not know where he was born we believe he came to Canada with his wife Anne Dolan who was born in Enniskillen County Fermanagh in Northern Ireland.Patrick also had a sister Mary and another brother who's name we don't have all came to Canada. Patricks sister Mary was married to Robert Carr.We do know that Mary's birthday was 7 June 1816 or 1817 .They may have come by way on a ship the Ballyshannon Co. Donegal Ireland to Quebec in 1852. Mary's husband Robert Carr was born24 May 1813 or 1814. Have no information on any of the family members when they live in Ireland. Any information would be helpful.

Please conntact me if you have any information on any of these families.

                                                     Carol O'Brien