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.
The Twelve of England sealed by the marriage of John I of Portugal and Philippa of Lancaster, daughter of John of Gaunt) and before the death of John the Gaunt in 1399. Narrowing the window further, it was probably sometime after 1389, when John of Gaunt returned to England from his failed Iberian campaign, and before the death of John of Gaunt's wife, the Duchess of Lancaster, Constance of Castile in 1394. The common date frequently cited is 1390. The Duchess's Castilian nationality may lend credence to such an event, and her twelve ladies-in-waiting were also, likely, Castilian rather than English, which may explain