You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
Just an idea I was thinking about: IOTL the Salic Law was only really imposed in France after the death of Louis X, when his brother Philip claimed the throne in order to avoid his four years old niece Joan taking the throne. However, Louis died quite young (he was only 27) and apparently his death was a bit odd (http://en.wikipedia.org/wiki/Louis_X_of_France#Death_and_legacy). If he had lived longer, at least until his daughter was old enough to be married, and assuming he doesn't have a son (John I still dies in infancy), could he have made Joan his legal heir?