John of Gaunt, Duke of Lancaster, third son of Edward III.; an ambitious man; vainly seized the crown of Castile; supported the Wycliffites against the clergy; married Blanche of Lancaster, and was made duke by Henry IV. (1340‒1399).
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
John Bull * John O' Groat's House