Barons
Sureties with known descendants past four generations:
- William d’Aubigny (d’Aubeney), of Belvoir
- Roger le Bigod, Earl of Norfolk
- Hugh le Bigod (later Earl of Norfolk)
- Henry de Bohun, Earl of Hereford (also a Crusader)
- Richard de Clare, Earl of Hertford
- Gilbert de Clare (later Earl of Gloucester and Hertford)
- John Fitz Robert
- Robert Fitz Walter (also a Crusader)
- William de Huntingfield (also a Crusader)
- John de Lacy, Constable of Chester (later Earl of Lincoln) (also a Crusader)
- William de Lanvallay
- William Malet
- William de Mowbray (also a Crusader)
- Saher de Quincy (also a Crusader)
- Robert de Roos (Ros)
- Geoffrey de Say
- Robert de Vere, Earl of Oxford
Sureties without known descendants past four generations:
- William de Forz, titular Earl of Aumale
- William de Hardell, Mayor of London
- Geoffrey de Mandeville, Earl of Essex
- William Marshal the Younger (later Earl of Pembroke)
- Roger de Montbegon
- Richard de Mountfichet
- Richard de Percy
- Eustace de Vescy
Descendants of the following Counselors of King John, who were in sympathy with the Magna Charta are also candidates for membership in the Order:
- William III d’Aubigny, Earl of Arundel
- Hubert de Burgh
- Alan of Galloway
- William Marshal, Sr., Earl of Pembroke
- William IV de Warenne, Earl of Surrey