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,
Berkeley Castle (as they themselues confessed) praied heartilie to God to receiue his soule, when they vnderstood by his crie what the matter ment.Christopher Marlowe's tragedy "Edward II" ("The troublesome raigne and lamentable death of Edward the second, King of England", first published 1594) depicts the murder at Berkeley Castle, using props mentioned in Holinshed, and popular stories of a red hot poker or suffocation continue to circulate. The cell where Edward is supposed to have been imprisoned and murdered can still be seen, along with the adjacent 11 m (36 ft) deep dungeon, which supposedly echoes the events of the murder