The head of her elder brother, the boy earl marshal, had been stricken off in the cornfield under the walls of York, but her younger brother's right to his father's dukedom was allowed by parliament in 1425.
Of its illegitimate descendants the house of Cornwall was founded by Richard, a natural son of Richard, king of the Romans and earl of Cornwall, who was ancestor of Lord Cornewall of Fanhope, temp. Henry VI., of the Cornewalls, " barons of Burford," and other families; but the principal house is that which was founded, at a later date, by Sir Charles Somerset, natural son of Henry (Beaufort) duke of Somerset (beheaded 1464), who was created earl of Worcester in 1513, and whose descendant Henry, marquess and earl of Worcester, obtained the dukedom of Beaufort in 1682.
In his seventieth year, as lieutenant-general of the North, he led the English host on the great day of Flodden, earning a patent of the dukedom of Norfolk, dated 1 February 1513/4, and that strange patent which granted to him and his heirs that they should bear in the midst of the silver bend of their Howard shield a demi-lion stricken in the mouth with an arrow, in the right colours of the arms of the king of Scotland.
He was not released until the accession of Mary, parliament restoring his dukedom on his petition for reversal of the attainder.
The barony passed to his nephew, Sackville George Lane-Fox (1827-1888), falling into abeyance on his death in August 1888, and the dukedom passed to his cousin, George Godolphin Osborne (1802-1872), a son of Francis Godolphin Osborne (1777-1850), who was created Baron Godolphin in 1832.