Isabella of Castile, Duchess of York Duchess of York (1355–1392) Parents María de Padilla Peter of Castile Children Edward of Norwich, 2nd Duke of York Constance of York Richard of Conisburgh, 3rd Earl of Cambridge Siblings Diego de Castilla Sancho de Castilla Jean de Castille Constance of Castile, Duchess of Lancaster María de Ayala Edward de Castilla Partners Edmund of Langley, 1st Duke of York
