My money is still on Isabel of Castile, wife of Edmund Duke of York supposed male line ancestor of the House of York. The lady had a contemporary reputation but being at that time far from the line of succession nobody seems to have followed up the accusations. Of course since the House of York's claim came from Anne Mortimer - who married Isabel's younger son Richard it doesn't matter.
Why people are so determined to exculpate Richard III I do not know. For me the clincher is while Richard denied on oath that he had caused the death of his wife or wanted to marry his niece he NEVER denied the much more damaging claim that he killed his nephews OR produced the boys alive and well.
Edited 1 time(s). Last edit at 03/27/2015 12:28PM by Roxana Cooper.