Hi Ann,
I was thrilled to read your post... I'm researching my great grandmother, Eliza Cofell, aka Marguerite. She was born in Canada to William Sherman Cofell and Eliza Belle Badder in 1885. Before coming to the US she bounced around a couple other families (her mother died shortly after she was born, and William Sherman Cofell apparently abandoned her), one of which started calling her Marguerite. She ended up in Jackson, Michigan, married to my great grandfather, Orson William Mains.
If this lines up with any of the Cofells you have, I'd love to get more info going back up the tree. I have Eliza Badder's parents as James Badder and Jane Naish, but that's all I have.