Remarks:
Mary Plantaganet, born in March 1279 and died in 1332, became a nun in 1285. It is reported that she was quite extravagant and had large gambling debts, as well as having an affair with Earl Warren (Warenne) during one of her visits to her father's court.
("The Genealogy of Homer Beers James", V1, JANDA Consultants, c 1993 Homer James)