House of Lancaster to members of the family and their supporters. The family provided England with three kings: Henry IV, who ruled from 1399 to 1413, Henry V (1413–1422), and Henry VI (1422–1461 and 1470–1471). The House became extinct in the male line upon the murder in the Tower of London of Henry VI, following the battlefield execution of his son Edward of Westminster, Prince of Wales, by supporters of the House of York in 1471. Lancastrian cognatic descentfrom John of Gaunt and Blanche of Lancaster's daughter Phillipacontinued in the royal houses of Spain and Portugal while the Lancastrian political cause was maintained
Hugh Courtenay (d.1471) of Sir Henry Willington of Umberleigh. He married Margaret Carminow, daughter and co-heiress of Thomas Carminow, by Joan Hill, the daughter of Robert Hill. They had the following issue: Thus the Courtenay estates were divided into four parts. On the death of Edward Courtenay, Earl of Devon, in 1556, the actual heirs to his estates were the following descendants of the four sisters above: Hugh Courtenay (d.1471) Sir Hugh Courtenay (c.1427 – 6 May 1471) of Boconnoc, Cornwall, was MP for Cornwall in 1446 and 1449. He was beheaded after the Battle of Tewkesbury in 1471. He was the second