Cornelius O'Hare O'Heir

Cornelius O'Hare was born about 1825 in County Armagh. He married Frances (Fanny) Fitzpatrick probably around 1854/5.  Frances was born about 1824 and died in Ontario, Canada in 1888.  They had at least two children. One was John born 1855 and Patrick in 1856 -- both born in Canada.  I have no record of Cornelius coming to Canada with Frances nor do I have any record of his death in Ireland, therefore I would also be interested in obtaining a birth, marriage and death record for Cornelius or anything else related to his family. Any help with suggestions as to where I might search would be greatly appreciated.