Catherine of Valois in the context of "House of Tudor"

Edmund Tudor, 1st Earl of Richmond (c. 1430 – 3 November 1456), also known as Edmund of Hadham, was the father of King Henry VII of England and a member of the Tudor family of Penmynydd. Born to Sir Owen Tudor and the dowager queen Catherine of Valois, Edmund was the half-brother of Henry VI of England. He was raised for several years by Katherine de la Pole, and Henry took an interest in Edmund's upbringing, granting him a title and lands once he came of age. Both Edmund and his brother, Jasper, were made advisers to the King, as they were his closest remaining blood relatives.

The brothers were made senior earls in the royal court and had influential positions in the Parliament of England. Edmund was also granted Baynard's Castle, London, and ran a successful estate. He was married to Lady Margaret Beaufort, after her first marriage was annulled. Prior to the start of the Wars of the Roses, Edmund liaised with Richard, Duke of York, and supported him when the King fell ill during 1453–1454. After war began in 1455, York sent Edmund to uphold the authority of the King in South Wales. While he was there, York was overthrown by the King and, in retaliation, Yorkist forces were sent to engage those of Tudor's in South Wales. Edmund was captured and imprisoned at Carmarthen Castle, where he died of the bubonic plague on 3 November 1456, three months before the birth of his son, the future Henry VII.

The Lancastrian War was the third and final phase of the Hundred Years' War between England and France. It lasted from 1415, when Henry V of England invaded Normandy, to 1453, when the English were definitively defeated in Aquitaine. It followed a long period of peace from the end of the Caroline War in 1389. The phase is named after the House of Lancaster, the ruling house of the Kingdom of England, to which Henry V belonged. The early years of the Lancastrian War were dominated by the forces of the House of Plantagenet, who held the English throne and also claimed that of France. Initial English successes, notably at the Battle of Agincourt, coupled with divisions among the French ruling class, allowed Henry V to win the allegiance of large parts of France. Under the terms of the Treaty of Troyes of 1420, Henry V married the French princess Catherine of Valois and was made regent of the kingdom and heir to the throne of France. A victory on paper was thus achieved by the English, with their claims now having legal standing. Some of the French nobility refused to recognise the agreement, however, and so military conflict continued. Henry V and, after his death, his brother John, Duke of Bedford, brought the English to the height of their power in France, with a Plantagenet crowned in Paris.

Sir Owen Tudor (Welsh: Owain ap Maredudd ap Tudur, c. 1400 – 2 February 1461) was a Welsh courtier and the second husband of Queen Catherine of Valois (1401–1437), widow of King Henry V of England. He was the grandfather of Henry VII, founder of the Tudor dynasty.
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