REF: Alf Garland <garlande@@dynamite.com.au>: Roger Leyburne, together with John de Warenne and Hebry Almaine apparently were close friends and supporters of Prince Edward, the son of Henry III. It has also ben recorded that on 15th October 1259, all three swore an oath of allegiance to Simon de Montfort, Earl of Leicester supporting his opposition to the King When Henry III summoned specific magnates to attend a parliament in London on 25th April 1260, he omitted from his list most of the clergy and the names of ardent supporters of Simon and Prince Edward from among the barons called to London, suggesting that those like Peter de Montfort and Roger Leyburne whose names were omitted, were considered to be openly defiant to the King in their adherence to Simon and Edward. It is also recorded that by 1265, Roger leyburne who previously had been regarded as one of Edward's closest friends turned against him when Edward reconciled with Henry his father. Later things changed again as this same Roger Leyburne turned his back on Simon, and threw his lot in with the King who rewarded him by making Roger a steward of the Royal Household.