In reply to ballsac:
More importantly Henry VIII wasn't the last of the Plantagenets, or even the last of the Tudors. His father was a usurper, but his mother had a legitimate claim to the throne.
The biggest deviation comes with George 1, as there were at least 50 people with a better claim to the throne, but all were inconveniently catholic. But being catholic isn't going to affect a notional claim to the notional French throne.
At which point you start realising just how silly inherited titles really are !