I was just watching a documentary on Richard III, Henry Tudor etc. and wondered where would the British line of succession be now had Henry Tudor not challenged and defeated Richard III at Bosworth and created the Tudor dynasty. I believe that Richard left no direct legitimate heirs and Henry (as Henry VII) effectively dispatched any remaining Plantaganets with a claim to the throne during the early part of his reign. Assuming that both Edward V and Richard, Duke of York (the "Princes in the Tower") both predeceased their uncle and no further breaks in the succession due to warfare etc., who would now be the rightful monarch of Britain? At what point would Henry's wife, Elizabeth of York (daughter of Edward IV) have become the rightful monarch, despite her gender? Would that effectively mean that Henry Tudor legitimised his own dynasty's right to succession, based upon his wife's crown, rather than his own? A family tree / graphical representation would be good!
(I've also posted this question in Society & Culture (Royalty) - wasn't sure where it best fit!)