>> which means that richard may not have had a legitimate claim to the throne. if the break dates back to the father of henry the 4th, it calls into question who was meant to be on the throne. >> if there was a break on that side, then of course it does raise questions about the legitimacy of particularly the lancastrian monarchs. and because there was a tudor link, as well. >> and through the tudors, the royalty. regardless of when it happened they say the queen's claim to the throne is safe. >> we're certainly not here saying the house of windsor has no legitimate claim to the throne. far fr...