Just a curious scenario I was thinking of...
Duke Francis II of Brittany does not die in a hunting accident in 1488, but instead goes on to live another decade. Wishing to preserve the independence of his duchy, he has his only surviving child and heiress presumptive, Anne, wed to Emperor Maximilian I's son, Philip the Fair, seeing the Habsburgs as the best option available (we'll say around 1493).
What would be the effects of this? Obviously the butterflies would be massive.
I'm curious to start a discussion...