Constanza of Castile | The History Jar

Constanza of Castile John’s marriage to Blanche of Lancaster gave him wealth and land – including thirty castles across England. He held Kenilworth, Pontefract, Lincoln, Leicester, Tutbury and Monmouth to name but a few. Blanche died on 12 September 1368 at Tutbury.

Three years later on 21st September 1371 John married Constanza or Constance of Castile. The following year at the beginning of February she made a state entry to London. The marriage gave John a claim to the kingdom of Castile by right of his new wife. Constance was the daughter of King Pedro – or Pedro the Cruel – John had had himself proclaimed King of Castile on January 29th. The state entry reinforced John’s new status and the reason behind it.

Pedro had been usurped by his half-brother Henry of Trastamara and having fled across the Pyrenees sought the help of Gaunt’s elder brother the Black Prince. There were many more twists in the plot but ultimately Henry murdered his brother and claimed the kingdom of Castile ignoring the rights of Constance who was safely in english held territory along with her younger sister Isabella. It was the Black Prince who escorted Constance into London in February 1372. The marriage was a dynastic one – shortly after the second marriage Gaunt began his affair with Katherine Swynford.

In the meantime Constance bore two children. John was born in 1374 but died the following year. Catherine or Catalina of Lancaster was born in early 1373 or possibly late 1372. Her marriage, like her half sister Philippa’s, reflected John’s Iberian political aspirations but one of her descendants would be at the centre of a scandal that shook England’s religious foundations.

It was only in 1386 that John was able to raise the funds to mount an invasion of Castile in aid to claim his throne after the King of Portugal defeated the Castilians. The money came from a loan granted by Richard II on the understanding that it would be repaid once John had his throne. Richard was leased to see the back of his dominant uncle whilst the nobility – or extended family as you’ve probably now come to think of them- resented his power. There was an underlying fear that he might seek the throne of England for himself.

Catherine of Aragon, c. 1496, portrait by Juan de Flandes. Fine Art Images/Heritage Images/Getty Images

The Iberian Campaign was not a rip roaring success. John couldn’t get his Castilian allies to give battle and it wasn’t long before disease began to decimate his army. The Treaty of Bayonne saw John give up his claim to the Castilian throne. In return he received a sizeable payout and his daughter Catalina was betrothed to Henry of Castile. She married him in 1388 and had several children including John II of Castile in inherited the throne whilst still a child. Her great grand daughter was Catherine of Aragon…back to the cousin issue again! This picture is in the post because its one of my absolute favourites!

Constanza died in March 1394 at Leicester. Two years later John of Gaunt married Katherine Swynford. John was fifty-six. Katherine was forty-six. She had no power, wealth or title from which John might benefit but she did already have four children by John.

Today we have arrived at the third surviving son of Edward III – John of Gaunt, Duke of Lancaster. I’ve posted about him before so I don’t intend to write about him in any great detail here – but there is a very tangled Plantagenet skein to unravel in terms of his children.

John married three times – his first marriage was to Blanche of Lancaster. She was the daughter of Henry of Grosmont, Duke of Lancaster. His grandfather was Edmund Crouchback, the younger brother of Edward I. This makes Blanche the great-great-grand-daughter of Henry III (yes- another one.) Her mother Isabella de Beaumont came from an equally prestigious bloodline. Her great grandfather was King of Jerusalem and somewhere along the line, inevitably, there was some Plantagenet blood flowing in Isabella’s veins.

Marriage_of_Blanche_of_Lancaster_and_John_of_Gaunt_1359 During the latter part of the 1350s Edward III was looking to provide wealth and land for his older sons. Blanche married John of Gaunt at Reading Abbey in May 1359. Blanche gave birth to seven children between 1360 and her death in 1368 but only three survived to adulthood: Philippa, Elizabeth and Henry of Bolingbroke. Philippa married into the royal house of Portugal in 1387 as part of the Treaty of Windsor so for the time being we can remove her from the intersecting Plantagenet lines – possibly with a huge sigh of relief.

When Henry of Bolingbroke usurped his cousin Richard II one of the pieces of “fake news” circulated by Lancaster sympathisers to justify the take over was that Edmund Crouchback was actually Edward I’s older brother but that because he was deformed, the younger brother took the crown. This was a fabrication. Edmund was called Crouchback because he had taken the cross and gone on Crusade. It is interesting none-the-less that Henry IV made his claim not from his grandfather Edward III but from his maternal link to Henry III.

Constanza of Castile – the source is the British Library

Gaunt’s second wife was Constance (Constanza) of Castile. John had aspirations to wear his own crown rather than simply watch over this nephew Richard II and there were plenty of members of Richard’s council who were delighted when John developed a continental interest. The marriage produced a child Catherine in 1372, a year after the marriage, followed by a son John who did not survive infancy. Catherine married Henry III of Castile and became the country’s regent during the minority of her son – John II of Castile.

Just to add to the familial knot:- Gaunt’s brother, Edmund of Langley – Duke of York married Constanza’s sister Isabella of Castile who was the mother of his children rather than his second wife Joan Holland.

KatSwynford

The third wife is the famous one – Katherine Swynford. John married her in 1396 but the couple had begun an affair soon after Blanche of Lancaster’s death and the death of Katherine’s husband Hugh. Kathryn’s eldest son by John was born the year after Constance of Castile had Catherine. There were four members of the Beaufort brood – John, Henry, Thomas and Joan. When John married Katherine he arranged for the entire family to be legitimised by the Church and the State.

Where does that leave us – aside from the need for a fortifying cup of tea? It leaves us with the two children from John’s marriage to Blanche of Lancaster who remained in England and the four from his relationship with Katherine Swynford – but as Cardinal Henry Beaufort had no legitimate children we are left with a total of five children who married and extended the Plantagenet line – which isn’t so bad until you realise exactly how large Joan Beaufort’s family actually was!

Next time: John of Gaunt’s Lancaster children – Philippa, Elizabeth and Henry. Be ready for the complications of Elizabeth’s marriage!

Weir, Alison. Britain’s Royal Families