That takes guts! My Dad did also. My mom had my sister from a previous marriage. He fell in love with her (my mother) and they married, at a time when that was a BIG taboo.
On my wife's side, two of her three sisters got had a child, got divorced and remarried (one of them had 5 more children). Her mother had two children, got divorced, remarried and had two more children (including my wife). While there are men reluctant to marry women with children, I have my doubts that it's even close to a rule.
Ironically, my wife and the two sisters are all Republicans, as was her mother, before she died. It's the sister who has been married once and never divorced, who is the token Democrat in the family.