Thomas de Berkeley, 5th Baron Berkeley 1417 he enfeoffed at Berkeley Castle, shortly before his death, several feoffees to hold all his lands in trust, due to the fact he had no male children as his heirs and that the course of succession then seemed unclear. The catalogue entry made by the British Museum librarian Isaac Jeaves for charter number 581 preserved in the muniments at Berkeley Castle records: The great City of London townhouse of the Berkeleys, known as "Berkeley's Inn", was at Puddle Dock by Baynard's Castle, close to the Blackfriars Monastery. Thomas FitzNicholl, one of the witnesses, was many times MP for Gloucestershire,
Joan de Geneville, 2nd Baroness Geneville worse privations having been locked up inside various religious houses with even less money at their disposal. Joan was transferred from Skipton to Pontefract Castle in July 1326. Mortimer and Isabella landed in England two months later in September 1326, and they joined forces with Henry, 3rd Earl of Lancaster. On 16 November, King Edward was taken prisoner and eventually murdered at Berkeley Castle, presumably by Mortimer's hired assassins. From 1327 to 1330, Mortimer and Isabella jointly held the Office of Regent for her son, King Edward III who was duly crowned following his father's death. Mortimer was made constable