Thomas de Berkeley, 1st Baron Berkeley Thomas de Berkeley, 1st Baron Berkeley Thomas de Berkeley, 1st Baron Berkeley (c.1251 – 23 July 1321), "The Wise", feudal baron of Berkeley, of Berkeley Castle in Gloucestershire, England, was a peer, soldier and diplomat. His epithet, and that of each previous and subsequent head of his family, was coined by John Smyth of Nibley (d.1641), steward of the Berkeley estates, the biographer of the family and author of "Lives of the Berkeleys". Thomas de Berkeley was born around 1251 at Berkeley Castle in Gloucestershire, the son of Sir Maurice de Berkeley, feudal baron of Berkeley, by his wife Isabel
Berkeley Castle from the Minstrels' gallery. His tomb is in St Mary's churchyard which stands besides the castle. Adjoining the Great Hall was the Chapel of St Mary (now the morning room) with its painted wooden vaulted ceilings and a biblical passage, written in Norman French. In the late 16th century Queen Elizabeth I visited the castle and played bowls on the bowling green. During the English Civil War, the castle still held sufficient significance for it to be captured in 1645 by Colonel Thomas Rainsborough, for the Parliamentarian side and after a siege which saw cannon being fired at point blank