Trying to locate origin of ancestor, Catherine O'Halloran Cornwall b.1826 married Richard Cornwall; three sons born Ireland 1852 1856 1858/9. Emigrated to Ottawa Canada,date unknown. First located as "widow" in 1868, Ottawa. Catherine died 1895 in Ottawa, CAN. Death reg. lists "BURROWS",Ireland, as place of birth. I am trying all sound-alikes.