These events are summarized in Powicke,
King Henry III and the Lord Edward
, ii, pp. 518–19. For the submission of Simon junior and his subsequent flight, see
Chronica Johannis de Oxenedes
, p. 230;
Gervase of Canterbury
, ii, pp. 243–4; ‘Annales Londonienses’, pp. 71–2 (which gives the date of his flight); ‘Annales prioratus de Dunstaplia’, p. 259;
Chronicle of Bury St Edmunds
, p. 33. See also BnFr MS Clairambault 1188, f. 26v;
CPR, 1258–66
, pp. 608–10.