Edmund Tudor, 1st Earl of Richmond in the context of "Tudor dynasty"

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 House of Tudor (/ˈtjuː.dər/, TEW-dər) was an English and Welsh dynasty that held the throne of England from 1485 to 1603. They descended ultimately from Ednyfed Fychan and the Tudors of Penmynydd, a Welsh noble family, and Catherine of Valois. The Tudor monarchs were also descended from the House of Lancaster. They ruled the Kingdom of England and the Lordship of Ireland (later the Kingdom of Ireland) for 118 years with five monarchs: Henry VII, Henry VIII, Edward VI, Mary I and Elizabeth I. The Tudors succeeded the House of Plantagenet as rulers of the Kingdom of England, and were succeeded by the Scottish House of Stuart. The first Tudor monarch, Henry VII, descended through his mother from the House of Beaufort, a legitimised branch of the English royal House of Lancaster, a cadet house of the Plantagenets. The Tudor family rose to power and started the Tudor period in the wake of the Wars of the Roses (1455–1487), which left the main House of Lancaster (with which the Tudors were aligned) extinct in the male line.

Henry VII (a descendant of Edward III, and the son of Edmund Tudor, a half-brother of Henry VI) succeeded in presenting himself as a candidate not only for traditional Lancastrian supporters, but also for discontented supporters of their rival Plantagenet cadet House of York, and he took the throne by right of conquest. Following his victory at the Battle of Bosworth Field (22 August 1485), he reinforced his position in 1486 by fulfilling his 1483 vow to marry Elizabeth of York, daughter of King Edward IV and the heiress of the Yorkist claim to the throne, thus symbolically uniting the former warring factions of Lancaster and York under the new dynasty (represented by the Tudor rose). The Tudors extended their power beyond modern England, achieving the full union of England and the Principality of Wales in 1542 (Laws in Wales Acts 1535 and 1542), and successfully asserting English authority over the Kingdom of Ireland (proclaimed by the Crown of Ireland Act 1542). They also maintained the nominal English claim to the Kingdom of France; although none of them made substance of it, Henry VIII fought wars with France primarily as a matter of international alliances but also asserting claim to the title. After him, his daughter Mary I lost control of all territory in France permanently with the Siege of Calais in 1558.