Men With Multiple Families

Hello!

I was wondering if anyone has any recs for books about men with multiple families? As in, he is married and has one or more women with whom he has fathered children. They dont know each other, so no one knows the other exists.

Except the man.

I prefer nonfiction, but if it’s fiction I am not interested in blended families or happy endings. And for fiction, it would need to be the core of the book versus a feature.

Thank you!

by EmperorGodzilla0