(Royal Ancestry) He died testate 27 May 1444, and was buried at Wimborne Minster, Dorset.
(Royal Tombs of Medieval England) In 1444 he died at St. Margaret's Hospital, Wimborne, near his ducal manor of Kingston Lacy, rumored to have committed suicide to avoid charges of financial corruption and inept command. The duke was buried in the hospital church standing on the site of an earlier church thought to be the burial-place of Ethelred I (d.8710, but which otherwise had no tradition of senior burial. There are no records of John Beaufort's funeral or tomb. John Beaufort has a tomb located to the south of the Wimborne Minster high altar and features a Purbeck marble tomb-chest and alabaster effigies of himself and Margaret Beauchamp. The duke's effigy Is shown wearing armor and both effigies are wearing ducal coronets. the duke's coffin apparently lies within the tomb-chest, which may have been executed soon after his death. But the single tier tomb-chest is not large enough to contain two coffins, and there is no record that Margaret was actually buried at Wimborne. In 1495 Margaret's family founded a chantry for her at Shaftesbury, but there is no record that she was buried there.
Sir John Beaufort, 1st Duke of Somerset succeeded to the title of 3rd Earl of Somerset [E., 1397] on 25 November 1418.2 He was invested as a Knight, Order of the Garter (KG) circa 1440. He was created 1st Earl of Kendal [England] on 28 August 1443. He was created 1st Duke of Somerset [England] on 28 August 1443. He has an extensive biographical entry in the Dictionary of National Biography.
John Beaufort, 1st Earl of Somerset
From Wikipedia, the free encyclopedia.
John Beaufort, 1st Earl of Somerset (c. 1373 - March 16, 1410) was the first of the four children of John of Gaunt, Duke of Lancaster, and his mistress (later his wife) Katherine Swynford. Beaufort was born in about 1373 and his surname probably reflects his birthplace, his father's Beaufort Castle in Anjou, France. The family emblem was the portcullis which is shown on the back of a 1p coin. John of Gaunt had his nephew Richard II of England declare the Beaufort children legitimate in 1390, with the important proviso that they were barred from the succession to the throne, despite being the grandchildren of Edward III of England. It is thought that this may have been a "private" act (that is, not entered in the public records), because, in January 1397, the Duke had Parliament issue a similar declaration, with the same proviso. Later that month, Gaunt married Katherine although they had been living apart for some years, possibly in order to have their children publicly declared legitimate. While this legal wrangling ultimately caused an enormous amount of bloodshed and destruction, it did result in one of the Beaufort descendants ascending the throne as Henry VII.
John Beaufort was created Earl of Somerset on February 10, 1397. On September 28 of that year he married Margaret Holland, daughter of Thomas Holland, 2nd Earl of Kent; the next day he was created Marquess of Somerset and Dorset. Also sometime that year he was made a Knight of the Garter. He lost the two marquessates in 1399 after the accession of Henry IV. In 1404 he was Constable of England.
He and his wife had six children:
Henry Beaufort, 2nd Earl of Somerset (c. 1401 - November 25, 1418).
John Beaufort, 1st Duke of Somerset (baptized March 25, 1404 - May 27, 1444).
Thomas Beaufort, Earl of Perche (c. 1405 - 1432).
Joan Beaufort (c. 1406 - July 15, 1445), who married James I of Scotlan
Edmund Beaufort, 2nd Duke of Somerset (c. 1406 - May 22, 1455).
Margaret Beaufort (c. 1409 - 1449). Married Thomas de Courtenay, 5th Earl of Devon.
Richardson, Douglas. Royal Ancestry (2013) Vol. V p. 200-203. Vol. V p. 528-533. Vol. IV p. 645-650
Royal Tombs of Medieval England M. Duffy 2003 p. 229-233
It may be possible to confirm family relationships with John by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: