Edmund Beaufort (died 1471) Edmund Beaufort (died 1471) Edmund Beaufort (c. 1438 – 6 May 1471), styled 4th Duke of Somerset, was an English nobleman, and a military commander during the Wars of the Roses, in which he supported King Henry VI. Edmund Beaufort, born about 1438, was the son of Edmund Beaufort, 2nd Duke of Somerset, and Eleanor, daughter of Richard Beauchamp, 13th Earl of Warwick and widow of Thomas, fourteenth baron Roos of Hamlake. After the defeat of the Lancastrians in 1461, Edmund was brought up in France with his younger brother John Beaufort, Marquess of Dorset, and on the execution of
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