I have a Catherine Crosby, born 1850 Brock, Ontario Canada to Michael and Mary Crosby born in Ireland. She married our Michael Duffy (1848 Canada-1913 Iowa) and had 9 children. She died in 1929 in Detroit, Michigan. She and Michael moved from Canada to Iowa where they are found in the 1880 Federal Census. Catherine's siblings, according to the 1851 Canadian census in Brock, were James (1840 IR), Mary Ann (1842 IR), Helen (1845 Canada), Thomas (1847 Canada). Catherine's children were Mary Ann (1875 Canada), John James (1877 Canada), Sarah Jane (1879 Canada), Michael Patrick Albert (1880 IA or WI), Anna (1883 IA), Margaret (1885 IA), Helen "Nellie" (1888 IA), and Mabel Catherine (1890 IA). Any information about her family would be appreciated.