This is an attempt to list all the people known to have escaped from the “impregnable” Tower of London. It may be that other names need to be added. The dates given are the dates of escape:
Ralph de Flambard, 1101
Roger Mortimer, later Earl of March, 1322.
Thomas Berkeley, 1320s. Note not listed in main source below. See Edward II, The Unconventional King, by Kathryn Warner, p. 175.
Robert Hauley, 1378
John Shakell, 1378
Sir John Oldcastle, 1413
Sir John Mortimer, (twice) 1420s. Later captured and executed. Note not listed in main source below. See The Reign of Henry VI, R. A. Griffiths. “So unsatisfactory had conditions of imprisonment become that keepers of prisons, especially the Tower, were afraid of their own prisoners.” (p.138)
Sir Humphrey Neville, 1463
Alice Tankerfelde Woolff, 1534. Recaptured and probably executed.
Brian O’Connor, 1552
Thomas Stucley, 1553.
Sir Anthony Fortescue, 1561
William Ogier, 1560
John Arden, or Ardent, 1597
John Gerard, 1597
2nd Duke of Somerset, 1610
Hugh Oge Macmahon, 1641. Recaptured and executed.
Edward Martin, Dean of Ely, 1642. Recaptured.
Daniel O’Neill, 1642
Arthur, Lord Capell, 1648. He was recaptured and beheaded.
Michael Hudson, 1648
George Cooke, 1651.
Lt. General John Middleton, 1651
Lt. General Sir Edward Massey, 1652
Thomas Dalyell, 1652.
Major General Robert Montgomerie, 1654
Tudor Thomas 1654. Recaptured.
Colonel Mallory, 1658. Recaptured.
John Lambert, 1660
William Lee, 1665
William Alton (Dutch Spy) 1673
Lord Edward Griffin, 1690. Recaptured.
Major General Dorrington, 1691
Colonel John Parker, 1694
4th Earl of Clancarty, 1695
5th Earl of Nithsdale, 1715
Christopher Layer, 1722. Recaptured and executed.
George Kelly, 1736
An unnamed subaltern in 1916. He returned.