Catherine is 7 years old (b. ~ 1844) in the 1851 census of Canada, and two years younger than Mary. The 1880 census (U.S., Raymond Township, Stearns County) says she's 35, which would make her born about 1845. But then, Joseph and Patrick were born in 1845. No documentation has been found beyond the 1880 census, though others seem to have found death information, and they have her birth date as March 20, 1843 as well.