I'm working off Ancestry, and yes, I know the dangers. [[Bollin-36|Charlotte Bollin]] seems to have had at least one child, Mary Ann Barrett, with her second husband before her marrying her first husband. I immediately thought, well, the birthdate must be wrong. But there is evidence which confirms the birthdate. See especially the "INTERWEAVING OF CHILDREN'S AGES OVER BOTH MARRIGES" comments in her bio.
So I'm out of my depth, and if you like a challenge and want to help me out, I'll be grateful. Am I dumping on the experts here because I'm lazy? Maybe a little, but this really has me baffled and my resources have limits.