What would the result have been if the Lancastrian forces had won at Tewkesbury (ergo the PoW isn't executed). I've heard that Siasbar Tudor was close enough to hear the battle, but because the river came down in flood was unable to get to the Lancastrian side in time.
Obviously, EIV is on the run (if he isn't killed in the battle or after a la Rutland or their father), I foresee Clarence being in disgrace as a traitor on both sides; and unless Anne Neville is pregnant (or will be soon), Marguerite d'Anjou might consider having the marriage scrapped in favor of more brilliant marriage for her beloved son; and Elizabeth Wydeville, unless Countess Rivers can pull some strings, stays in sanctuary at Westminster.