Edmund Beaufort (died 1471) his elder brother Henry Beaufort, 3rd Duke of Somerset, Edmund is said to have succeeded as 4th Duke by Lancastrians in February 1471, but his brother's attainder was never reversed, and his titles remained forfeit. In a proclamation dated 27 April 1471 Edmund is spoken of as "Edmund Beaufort, calling himself duke of Somerset". In October 1470 Beaufort returned from France when King Edward IV was driven from the throne after the Earl of Warwick's defection and alliance with Queen Margaret and the restoration of King Henry VI, who was the first monarch ousted by the family feud, and whom
Cham–Vietnamese War (1471) Cham–Vietnamese War (1471) The Cham-Đại Việt War of 1471 began when Emperor Lê Thánh Tông of Đại Việt launched a military expedition that is widely regarded as an event that marked the downfall of Champa. The Đại Việt forces attacked and sacked the kingdom's capital Vijaya, and decimated the Cham army. As a result of the conflict, Champa was forced to cede territory to Annam and ceased to pose a threat to Annamese territory since then. The Cham and the Đại Việt had had a history of conflict. In the course of their wars, peace often came with economic exhaustion