My Lord John My Lord John My Lord John is an unfinished historical fiction novel by the British author Georgette Heyer, published posthumously in 1975 after her death the previous year. It traces the early lives of the "young lordings" – Harry, Thomas, John, and Humfrey – all sons of the future Lancastrian king Henry IV of England. They grow up amidst turbulent events including the 1394 pestilence, the exile of their father by Richard II, the death of their powerful grandfather John of Gaunt, and the seizure of the throne by their father. John of Lancaster serves as the novel's main character.
John of Gaunt Castilians refused to offer battle and the Galician-Anglo-Portuguese troops, apart from time-wasting sieges of fortified towns, were reduced to foraging for food in the arid Spanish landscape. They were harried mainly by French mercenaries of the Castilian king. Many hundreds of English, including close friends and retainers of John of Gaunt, died of disease or exhaustion. Many deserted or abandoned the army to ride north under French safe-conducts. Shortly after the army returned to Portugal, John of Gaunt concluded a secret treaty with John of Trastámara under which he and his wife renounced all claim to the Castilian throne in