 In response , and hoping to win wider support for his government , Montfort summoned a new parliament for 20 January 1265 which continued until mid March that year . It was held at short notice , with the summons being issued on 14 December , leaving little time for attendees to respond . He summoned not only the barons , senior churchmen and two knights from each county , but also two burgesses from each of the major towns such as York , Lincoln , Sandwich , and the Cinque Ports , the first time this had been done . Due to the lack of support for Montfort among the barons , only 23 of them were summoned to parliament , in comparison to the summons issued to 120 churchmen , who largely supported the new government ; it is unknown how many burgesses were called . The event was overseen by King Henry , and held in the Palace of Westminster , London , which was the largest city in England , and whose continuing loyalty was essential to Montfort 's cause . 
 In response , and hoping to win wider support for his government , Montfort summoned a new parliament for 20 January 1265 which continued until mid March that year . It was held at short notice , with the summons being issued on 14 December , leaving little time for attendees to respond . He summoned not only the barons , senior churchmen and two knights from each county , but also two burgesses from each of the major towns such as York , Lincoln , Sandwich , and the Cinque Ports , the first time this had been done . Due to the lack of support for Montfort among the barons , only 23 of them <a href='uninflect' title='1'><mark>were</mark></a> summoned to parliament , in comparison to the summons issued to 120 churchmen , <a href='null_relcl' title='2'><mark>who</mark></a>largely supported the new government ; it is unknown how many burgesses <a href='uninflect' title='3'><mark>were</mark></a> called . The event was overseen by King Henry , and held in the Palace of Westminster , London , which was the largest city in England , and whose continuing loyalty was essential to Montfort <a href='null_genetive' title='4'><mark>'s</mark></a>cause . 
In response , and hopin to win wider support for his government , Montfort summoned a new parliament for 20 January 1265 which continued untill mid March dat year . It was held at short notice , with the summons bein issued on 14 December , leavin little time for attendees to respond . He summoned not only the barons , senior churchmen and 2 knights from each county , but also two burgesses from each of the major towns such as York , Lincoln , Sandwich , and the Cinque Ports , the first time this had been done . Due to da lack of support for Montfort among the barons , only 23 of them was summoned to parliament , in comparison to tdasummons issued to 120 churchmen , largely supported the new government ; it is unknown how many burgesses was called . The event was overseen by King Henry , and held in thdaalace of Westminster , London , which was thedargest city in England , and whose continuing loyalty was essential to Montfort  cus .