My great-grandfather, David Dunn, and my great-grandmother, Isabella Foster, both from Grey County, were married about 1887, I believe in Grey County. On March 27, 1890, my grandmother Margaret Ann Dunn was born, again, I believe, in Grey County. Online I've found a report of a birth in Melancthon on March 27, 1890, of a Margaret Ann McCoy to parents David McCoy and Isabella Foster. This seems like an odd coincidence. I've found some other hints to suggest that David McCoy and David Dunn may be the same individual. But I have no proof one way or the other. Can anyone help me solve this puzzle? RGGarrett Portland, OR