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) and once their economies recovered, these two kingdoms went to war again. When fighting resumed in 1471, the Champa kingdom found itself weakened and isolated. It has experienced numerous civil wars and, at one point, had five different rulers. For its earlier attack on Angkor, the Khmers ignored the Cham's request for assistance when Vietnam invaded. The Cham also requested Ming China to intervene by helping bring the Vietnamese back in line by force and demarcate the border between Champa and Vietnam. China, however, only verbally rebuked the Vietnamese for its incursion, which the Vietnamese ignored, proceeding with its attack