See also
| Husband: | Edmund of LANGLEY (1341-1402) | |
| Wife: | Infanta Isabella of CASTILE (1355-1392) | |
Edmund of LANGLEY, Edmund_of_Langley_2C_Duke_of_York
| Name: | Edmund of LANGLEY | |
| Sex: | Male | |
| Name Suffix: | 1st Duke of York | |
| Father: | EDWARD III (1312-1377) | |
| Mother: | Philippa of HAINAULT ( - ) | |
| Birth | 5 Jun 1341 | |
| Death | 1 Aug 1402 (age 61) | |
Infanta Isabella of CASTILE, Isabella_of_Castile-Langley
| Name: | Infanta Isabella of CASTILE | |
| Sex: | Female | |
| Father: | - | |
| Mother: | - | |
| Birth | 1355 | |
| Death | 23 Dec 1392 (age 36-37) | |
Married Infanta Isabella of Castile sister of Gaunt's second wife; Had issue.
Infanta Isabella of Castile, Duchess of York (c. 1355 – 23 December 1392) was a daughter of King Peter of Castile and María de Padilla. She was a younger sister of Constance, Duchess of Lancaster.
In 1372, sometime between the 1 March and 30 April, Isabella married Edmund of Langley, 1st Duke of York, fourth son of Edward III of England and Philippa of Hainault at Wallingford. As a result of her marriage, she became the first of a total of eleven women who became (as a courtesy by marriage to their husbands) Duchess of York. They had three children:
Edward of Norwich, 2nd Duke of York (1373 – 25 October 1415).
Constance of York (1374 – 29 November 1416). Married Thomas le Despenser and was mother of Isabel le Despenser, Countess of Worcester and Warwick.
Richard of Conisburgh, 3rd Earl of Cambridge (1375 – 5 August 1415).
She was named a Lady Companion of the Order of the Garter in 1378. Isabella died 23 December 1392 and on 14 January 1393 was buried in Kings Langley Manor House in Hertfordshire, England.