ランカスター朝没落の原因は？
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 by Henry Tudora relatively unknown scion of the Beaufortseventually leading to the establishment of the House of Tudor. The Lancastrians left a legacy through the patronage of the artsmost notably in founding Eton College and King's College, Cambridgebut to historians' chagrin their propaganda, and that of their Tudor successors, means that it is Shakespeare's partly fictionalized history plays rather than medievalist scholarly research that has the greater influence on modern perceptions of the dynasty.
extinct in the male line