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Birth:          1355 Morales, Tordesillas, Villadolid, Spain
Death:          23 Dec 1392 
Burial:         14 Jan 1393 Church of the Dominicans, King's Langley, Hertfordshire, England

Notes
https://en.wikipedia.org/wiki/Isabella_of_Castile,_Duchess_of_York
Isabella of Castile, Duchess of York (1355 – 23 December 1392) was the daughter of 
King Peter and his mistress Marํa de Padilla (d. 1361). 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 Langley, 1st Duke of 
York.
Life[edit]

Isabella was the youngest of the three daughters of King Peter of Castile by his 
favourite mistress, Marํa de Padilla (d.1361).[1]

On 21 September 1371 Edward III's fourth son, John of Gaunt, 1st Duke of Lancaster, 
married Isabella's elder sister, Constance (d. 1394), who after the death of their father 
in 1369 claimed the throne of Castile. Isabella accompanied her sister to England, and 
on 11 July 1372, at about the age of 17, married John of Gaunt's younger brother, 
Edmund of Langley, 1st Duke of York, fifth son of King Edward III and Philippa of 
Hainault, at Wallingford, Oxfordshire, as part of a dynastic alliance in furtherance of 
the Plantagenet claim to the crown of Castile.[2] According to Pugh, Isabella and 
Edmund of Langley were 'an ill-matched pair'.[3]

As a result of her indiscretions, including an affair with King Richard II's half-brother, 
John Holland, 1st Duke of Exeter (d. 1400), whom Pugh terms 'violent and lawless', 
Isabella left behind a tarnished reputation, her loose morals being noted by the 
chronicler Thomas Walsingham. According to Pugh, the possibility that Holland was 
the father of Isabella's favourite son, Richard of Conisburgh, 3rd Earl of Cambridge, 
'cannot be ignored'.[4]

In her will Isabel named King Richard as her heir, requesting him to grant her younger 
son, Richard, an annuity of 500 marks. The King complied. However, further largess 
which might have been expected when Richard came of age was not to be, as King 
Richard II was deposed in 1399, and according to Harriss, Isabella's younger son, 
Richard, 'received no favours from the new King, Henry IV'.[5]

Isabella died 23 December 1392, aged about 37, and was buried 14 January 1393 at 
the church of the Dominicans at Kings Langley.[6] After Isabella's death, Edmund of 
Langley married Joan Holland, sister and co-heir of Edmund Holland, 4th Earl of Kent 
(9 January 1382 – 15 September 1408), with whom his daughter, Constance, had lived 
as his mistress (see above).[7]

Isabella was appointed a Lady of the Garter in 1379.[8]

Issue[edit]

Isabella and Edmund of Langley, 1st Duke of York, had three children:
Edward of Langley, 2nd Duke of York (c. 1373 – 25 October 1415), who married firstly, 
Beatrice of Portugal, which marriage was annulled, and secondly, Philippa Mohun, 
third daughter of John Mohun, 2nd Lord Mohun (c. 1320 – 15 September 1375), and 
Joan Burghersh (d. 4 October 1404), daughter of Bartholomew de Burghersh (c. 1304 – 
3 August 1355), 3rd Baron Burghersh. Edward served in numerous administrative 
offices and military campaigns during the reigns of Richard II, Henry IV and Henry V, 
and was slain at the Battle of Agincourt on 25 October 1415.[10]
Constance of York (c. 1374 – 28 November 1416), who married Thomas le Despenser, 
1st Earl of Gloucester (22 September 1373 – 16 January 1400), third but first surviving 
son of Edward le Despenser and Elizabeth Burghersh, by whom she had a son, 
Richard, and two daughters, Elizabeth and Isabel.[11] Constance was involved in a 
plot to abduct the young Edmund Mortimer, 5th Earl of March, in February 1405, and 
in turn implicated her elder brother, Edward. After the death of her husband she was 
either betrothed to or lived as the mistress of Edmund Holland, 4th Earl of Kent (9 
January 1382 – 15 September 1408), and had a daughter by him, Eleanor Holland (died 
c. 1459), who married James Tuchet, 5th Baron Audley.[12]
Richard of Conisburgh, 3rd Earl of Cambridge (1375 – 5 August 1415), who married 
Anne Mortimer, and was beheaded on 5 August 1415 for his role in the Southampton 
Plot.

Shakespeare and Isabella of Castile[edit]

Isabella is depicted, ahistorically, as living in late December 1399 at the time of the 
Epiphany Rising in Act V of Shakespeare's Richard II.

Parents
ALFONSEZ Pedro I "the Cruel" (30 Aug 1334 - 22 Mar 1369)
DE PADILLA Maria Juana (ABT 1334 - Jul 1361)

Siblings
____ Isabel (1355 - 23 Dec 1392)

Marriage To ____ Edmund "of Langley" (5 Jun 1341 - 1 Aug 1402)
    m.  

Notes

Parents
____ Edward III (13 Nov 1312 - 21 Jun 1377)
OF HAINAULT Philippa (24 Jun 1311 - 15 Aug 1369)

Children by ____ Edmund "of Langley" 5 Jun 1341 - 1 Aug 1402
OF YORK Constance (ABT 1374 - 28 Nov 1416)

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