I have the same situation. My ancestors, James McCollum and his wife Mary Jane Fleming were born in Scotland. Their only child Isabella was born in Ireland in 1822. I first find the family in the 1840 Jericho,Chittenden, VT census. They removed to Concord, Jefferson, WI with their son-in-law Henry Martin Rouse, born 1822 VT, after Oct 1843. They are enumerated on the 1850 and 1860 Concord, Jefferson WI census. Henry Martin Rouse removed to Kent, MI after 1860. His mother-in-law, Mary Jane (Fleming) McCollum is enumerated in his household in the 1870 Paris,Kent,MI census. Carl A Patin Casselberry FL