Isabella of Castile, duchess of York (born 1355)

Isabella of Castile, Duchess of York

Castillian princess

Isabella of Castile, Duchess of York was the daughter of King Peter and his mistress María de Padilla. She accompanied her elder sister, Constance, to England after Constance's marriage to John of Gaunt, 1st Duke of Lancaster, and married Gaunt's younger brother, Edmund of…