This is an idea I've always been fond of so wanted to throw out there. What if, instead of marrying Katherine of Aragon, Henry VIII had married Margaret of Angouleme, sister to Francois I of France? Maybe they marry between 1505 and 1509, after Henry has been forced to forswear his betrothal to KOA, but before Henry VIII dies. What happens to Anglo-French relations? And does Henry get his heir any sooner than OTL?