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
Catalan Civil War his new lieutenant. In 1471 the French troops fighting with the Catalans retired to France and the advantage shifted decidedly to John II. Joan Margarit, the Bishop of Girona, returned his city to John (October 1471), followed by other towns. Duke John of Lorraine died at Barcelona on 16 December 1470 and the Catalans lost their most important ally. King René lived until 1480, but was not personally present in Catalonia. King John II campaigned in the Alt Empordà until June 1472 and then against Barcelona. A naval and land siege lasted from November 1471 to 16 October 1472. By