House of Tudor House of Tudor The House of Tudor was an English royal house of Welsh origin, descended in the male line from the Tudors of Penmynydd. Tudor monarchs ruled the Kingdom of England and its realms, including their ancestral Wales and the Lordship of Ireland (later the Kingdom of Ireland) from 1485 until 1603, with five monarchs in that period. The Tudors succeeded the House of Plantagenet as rulers of the Kingdom of England, and were succeeded by the House of Stuart. The first Tudor monarch, Henry VII of England, descended through his mother from a legitimised branch of the English
House of Tudor Catholic Mary I. On 1 November 1455, John Beaufort's granddaughter, Margaret Beaufort, Countess of Richmond and Derby, married Henry VI's maternal half-brother Edmund Tudor, 1st Earl of Richmond. It was his father, Owen Tudor (), who abandoned the Welsh patronymic naming practice and adopted a fixed surname. When he did, he did not choose, as was generally the custom, his father's name, Maredudd, but chose that of his grandfather, Tudur ap Goronwy, instead. This name is sometimes given as "Tewdwr", the Welsh form of Theodore, but Modern Welsh "Tudur", Old Welsh "Tutir" is originally not a variant but a different