John of Gaunt in the context of "House of Lancaster"

Henry VII (28 January 1457 – 21 April 1509), also known as Henry Tudor, was King of England and Lord of Ireland from his seizure of the crown on 22 August 1485 until his death in 1509. He was the first monarch of the House of Tudor.

Henry was the son of Edmund Tudor, 1st Earl of Richmond, and Lady Margaret Beaufort. His mother was a great-granddaughter of John of Gaunt, an English prince who founded the Lancastrian cadet branch of the House of Plantagenet. Henry's father was the half-brother of the Lancastrian king Henry VI. Edmund Tudor died three months before his son was born, and Henry was raised by his uncle Jasper Tudor, a Lancastrian, and William Herbert, a supporter of the Yorkist branch of the House of Plantagenet. During Henry's early years, his uncles and the Lancastrians fought a series of civil wars against the Yorkist claimant, Edward IV. After Edward retook the throne in 1471, Henry spent 14 years in exile in Brittany. He attained the throne when his forces, supported by France and Scotland, defeated Richard III at the Battle of Bosworth Field. He was the last king of England to win his throne on the field of battle, defending it two years later at the Battle of Stoke Field to decisively end the Wars of the Roses (1455–1487). He strengthened his claim by marrying Elizabeth of York, Edward IV's daughter.

The Kingdom of Galicia was a political entity located in southwestern Europe, which, at its territorial zenith, occupied the entire northwest of the Iberian Peninsula. In the early 10th century, the Kingdom of Galicia was formed following the division of the Kingdom of Asturias after the death of Alfonso III in 910. His sons split the kingdom, with Ordoño II inheriting Galicia. While Galicia became a distinct political entity, it remained closely tied to the Leonese and Asturian realms through dynastic connections. Later, Ordoño II would integrate Galicia into the Kingdom of León when he inherited the latter. Though the Kingdom of Galicia had moments of semi-independence, it was typically seen as part of the Kingdom of León. Compostela became the capital of Galicia in the 11th century, while the independence of Portugal (1128) determined its southern boundary. The accession of Castilian King Ferdinand III to the Leonese kingdom in 1230 brought Galicia under the control of the Crown of Castile.

Galicia resisted central control and supported a series of alternative claimants, including John of León, Galicia and Seville (1296), Ferdinand I of Portugal (1369) and John of Gaunt (1386) and was not brought firmly into submission until the Catholic Monarchs imposed the Santa Hermandad in Galicia. The Kingdom of Galicia was then administered within the Crown of Castile (1490–1715) and later the Crown of Spain (1715–1833) by an Audiencia Real directed by a Governor which also held the office of Captain General and President. The representative assembly of the Kingdom was then the Junta or Cortes of the Kingdom of Galicia, which briefly declared itself sovereign when Galicia remained free of Napoleonic occupation (except during January–July 1809). The kingdom and its Junta were dissolved by Maria Cristina of Bourbon-Two Sicilies, Regent of Spain, in 1834.

A poll tax, also known as head tax or capitation, is a tax levied as a fixed sum on every liable individual (typically every adult), without reference to income or resources. Poll is an archaic term for "head" or "top of the head". The sense of "counting heads" is found in phrases like polling place and opinion poll.

Head taxes were important sources of revenue for many governments from ancient times until the 19th century. In England, poll taxes were levied by the government of John of Gaunt in the 14th century and Charles II in the 17th century. In the United Kingdom a poll tax was levied by the government of Margaret Thatcher in the 20th century. In the United States, voting poll taxes (whose payment was a precondition to voting in an election) have been used to disenfranchise impoverished and minority voters (especially after Reconstruction).

The Book of the Duchess, also known as The Deth of Blaunche, is the earliest of Chaucer's major poems, preceded only by his short poem, "An ABC", and possibly by his translation of The Romaunt of the Rose. Based on the themes and title of the poem, most sources put the date of composition after 12 September 1368 (when Blanche of Lancaster died) and before 1372, with many recent studies privileging a date as early as the end of 1368.

Overwhelming (if disputed) evidence suggests that Chaucer wrote the poem to commemorate the death of Blanche of Lancaster, wife of John of Gaunt. The evidence includes handwritten notes from Elizabethan antiquary John Stow indicating that the poem was written at John of Gaunt's request. There are repeated instances of the word "White", which is almost certainly a play on "Blanche". In addition, at the end of the poem there are references to a "long castel", suggesting the house of Lancaster (line 1,318) and a "ryche hil" as John of Gaunt was earl of Richmond (mond=hill) (line 1,319) and the narrator swears by St. John, which is the name of John of Gaunt's saint.

John I (Spanish: Juan I; 24 August 1358 – 9 October 1390) was King of Castile and León from 1379 until 1390. He was the son of Henry II and of his wife Juana Manuel of Castile. John ascended to the throne in 1379 and in 1383, he married Beatrice, the daughter of King Ferdinand I of Portugal. When Ferdinand died that same year, John, aiming to enforce his claim on the Portuguese crown through his wife, brought the country into the 1383–1385 Crisis. His forces faced resistance from Portuguese factions supporting John of Aviz. The conflict culminated in the Battle of Aljubarrota in 1385, where John suffered a defeat, ensuring Portugal's independence.

To secure Castile, he married his son Henry to the daughter of John of Gaunt, linking the Trastámara and Plantagenet dynasties. He died in 1390 when he fell from his horse during a fantasia performance. His death led to minority rule under his son, Henry III.

Richard of York, 3rd Duke of York (21 September 1411 – 30 December 1460), also named Richard Plantagenet, was a leading English magnate and claimant to the throne during the Wars of the Roses. He was a member of the ruling House of Plantagenet by virtue of being a direct male-line descendant of Edmund of Langley, King Edward III's fourth surviving son. However, it was through his mother, Anne Mortimer, a descendant of Edward III's second surviving son, Lionel of Antwerp, that Richard inherited his strongest claim to the throne, as the opposing House of Lancaster was descended from John of Gaunt, Duke of Lancaster, the third surviving son of Edward III. He also inherited vast estates and served in various offices of state in Ireland, France and England, a country he ultimately governed as Lord Protector due to the mental instability of King Henry VI.

Richard's conflicts with Henry's wife, Margaret of Anjou, and other members of Henry's court, such as Edmund Beaufort, 2nd Duke of Somerset, and his competing claim to the throne, were leading factors in the political upheaval of mid-fifteenth-century England, and a major cause of the Wars of the Roses (1455–1487). Richard eventually attempted to take the throne, but was dissuaded, although it was agreed that he would become king on Henry's death. However, within weeks of securing this agreement (the Act of Accord), he was killed at the Battle of Wakefield in 1460, alongside his son, Edmund. Two of his surviving sons later ascended the throne: Edward IV and Richard III.

Richard II (6 January 1367 – c. 14 February 1400), also known as Richard of Bordeaux, was King of England from 1377 until he was deposed in 1399. He was the son of Edward, Prince of Wales (later known as the Black Prince), and Joan, Countess of Kent. Richard's father died in 1376, leaving Richard as heir apparent to his grandfather, King Edward III; upon the latter's death, the 10-year-old Richard succeeded to the throne.

During Richard's first years as king, government was in the hands of a series of regency councils, influenced by Richard's uncles John of Gaunt and Thomas of Woodstock. England at that time faced various problems, most notably the Hundred Years' War. A major challenge of the reign was the Peasants' Revolt in 1381, and the young king played a central part in the brutal suppression of this crisis. Less warlike than either his father or grandfather, he sought to bring an end to the Hundred Years' War. A firm believer in the royal prerogative, Richard restrained the power of the aristocracy and relied on a private retinue for military protection instead. In contrast to his grandfather, Richard cultivated a refined atmosphere centred on art and culture at court, in which the king was an elevated figure.