Thomas de Berkeley, 5th Baron Berkeley the inheritance of Berkeley Castle and the other Berkeley lands, as Lisle being heir-general to Thomas de Berkeley, 5th Baron Berkeley and was the Berkeley heir male. Lisle impetuously challenged Berkeley to a battle, and the latter agreed, the battle to be fought the next day at Nibley Green. Lisle was defeated. Thomas de Berkeley, 5th Baron Berkeley Thomas de Berkeley, 5th Baron Berkeley (5 January 1352/53 – 13 July 1417), "The Magnificent", of Berkeley Castle and of Wotton-under-Edge in Gloucestershire, was an English peer and an admiral. His epithet, and that of each previous and subsequent head of his
Tibbers Castle such as lime. The "Mote de Tibbris" is mentioned in the "Registrum Magni Sigilli" in 1489 and 1541. The interpretation of Tibbers has changed over time, and in the 18th century it was thought to be a Roman fort though it was later understood to be a medieval castle. The name of the castle led to the suggestion that it derived from Tiberius Caesar, however 'Tibbers' comes from the Gaelic word 'Toibar' meaning a well. The earliest recorded excavation at Tibbers Castle took place in 1864, which recovered two coins from the reign of Edward II of England (1307–1327) and