John Welles, only child of Leo, 6th Lord Welles, by his 2nd wife, Margaret, Countess Dowager of Somerset, having taken up arms in behalf of his kinsman, Henry, of Richmond (he was uncle by the half blood to Henry, Earl of Richmond, afterwards Henry VII), was made constable of the castle of Rockingham, and steward of Rockingham Forest after the accession of that personage to the throne as Henry VII. He was also elevated to the peerage by letters patent (but the date is not known), as Viscount Welles, a was summoned to parliament in that dignity, 1 September, 1487. He was afterwards made a knight of the Garter. His lordship m. the Lady Cecily Plantagenet, dau of King Edward IV, and sister-in-law to King Henry VII, and is stated to have had an only dau., Anne, who d. an infant. He d. in 1498, when the Viscountcy of Welles became extinct. His lordship's widow m. Sir John Kyme, of Lincolnshire. [Sir Bernard Burke, Dormant, Abeyant, Forfeited and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 573, Welles, Viscount Welles]
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