Thomas Berkeley, 5th Baron Berkeley Thomas Berkeley, 5th Baron Berkeley Thomas Berkeley, "de jure" 5th Baron Berkeley, (b. 1472 - 22 January 1532) was a British soldier and aristocrat. He was born to Sir Maurice Berkeley, "de jure" 3rd Baron Berkeley, and Isabel Meade, in England. He was the younger brother to Maurice Berkeley, "de jure" 4th Baron Berkeley, and had a younger brother, James, and younger sister, Anne. On 9 September 1513 he fought in the Battle of Flodden and was knighted by the Earl of Surrey, Thomas Howard. He later became Constable of Berkeley Castle on 15 May 1514, and Sheriff of Gloucestershire,
Nottingham Castle were acting as Regents during Edward's minority following their murder of his father Edward II at Berkeley Castle. William Montagu and his companions, were accompanied by William Eland, castellan and overseer of Mortimer's castle, who knew the location of a secret tunnel which would take them up to a locked door higher up in the castle to a normally locked door. In the dark of night on 19 October 1330, Montagu and his companions entered the tunnel, climbed up to the door, which had now been unlocked either by Edward III or a trusted servant, overpowered Mortimer, killing Mortimer's personal