Yes, it was Susannah Sturdivant. She passed away in 1848 and Michael remarried twice after that. Julia Ann Depee, brother of John Dupee (1832-1914)was my 2nd great grandmother. She married a John Walker. I have three children for your grandparents Charles Oval and Violet May (Dupee) Richardson. They are Blake, Robert and Hattie. Were there others? I do believe these three siblings were born in Warwick, Lambton and the family moved to Michigan in 1928. Do you descend from one of these three?
It appears we may be 4th cousins. Would be pleased to exchange information with you on the Dupee family. As you may know, there were several who immigrated to Michigan.