The following chart is a family tree of the Dukes of Norfolk, who were members of the Plantagenet, Mowbray and Howard families.
Errors :
Edward II was the issue of Edward I's first marriage to Eleanor of Castile, (1241-1290), not of his second marriage to Marguerite of France.
There is no evidence that Richard, Duke of York, who was married as a child to Ann Mowbray, died in 1483.
Frances de Vere, Countess of Surrey, wife of Henry Howard, Earl of Surrey, was daughter of the 15th Earl of Oxford and Elizabeth Trussell, not the 14th Earl of Oxford and Anne Howard.
