All Acceptable if they Convert
1.Grand Duchess Anna Petrovna of Russia
https://en.m.wikipedia.org/wiki/Grand_Duchess_Anna_Petrovna_of_Russia
2. Louise Élisabeth d'Orléans
https://en.m.wikipedia.org/wiki/Louise_%C3%89lisabeth_d%27Orl%C3%A9ans
3.Elisabeth Therese of Lorraine...
If Margaret Beaufort lives a little longer, I could totally see her hiding Henry VIII's death for a while and maneuvering to crown Margaret/James. She'll have remembered WoR and wouldn't want to risk another war by crowning Mary
I know some of you wrote off a French alliance but what about Catherine of France b. 1428 - she was reportedly beautiful and intelligent but she also has siblings that could build a wider network of alliances
But what about Mary Boleyn for Henry - she's familiar, she's proven to be fertile, her father has no problem with selling her, and more importantly Henry would feel like she'd understand his grief because she loved Anne too. So I'm surprised no one mentioned Mary's family pushing her back into...