1258至 1267年間英格蘭的貴族改革叛亂運動，是十二、十三世紀英格蘭政治史的研究重點之一。本文試圖從土地問題的角度著手，以兩位政府官員的經歷為例證，探討改革運動中發生於 1263年及 1265年的兩個重要環節。1261年亨利三世復權之後，至 1263年，改革派勢力又起。改革派在 1263年 7月透過大量掠奪保王派土地及財物成功奪權，但三個月後，卻因為歸還受害者財產的措施不夠積極，旋即喪失權柄。 1264年中，改革派利用其優越的軍事策略，大敗王軍，俘擄亨利三世，再攬政治權力，直到保王派於 1265年 8月重起戰事得勝為止。亨利三世在 1265年底先是沒收改革派叛徒的地產，贈與保王派有功者，次年則改以罰金方式處置叛徒。本文透過修道院編年史、 1265年的一場全國性調查結果以及 1267年開始的巡迴法庭紀錄，探討土地或地上物如何在 1263年作為奪權武器或談判籌碼，又如何在 1265年轉而成為國王重振權威或叛亂者重返政治社群象徵之過程。

In the period of reform and rebellion in England, 1258-1267, the issue of land stood out at two particular moments: during the widespread attacks and spoliation of royalists’ properties in the summer of 1263, and the confiscation and later restoration of rebels’ lands in 1265 and 1266. The attacks on land brought Simon de Montfort, Earl of Leicester, to power, and the thoroughness of the attacks can best be seen in the case of the royal councilor John Mansel. The failure of the reformers adequately to restore lands to the victims in the autumn explains the briefness of Earl Simon’s first period in power.In 1265, after the Battle of Evesham, the king instituted a policy of total confiscation of rebel lands, which he then granted out to royalist supporters, with Robert Walerand as one of the major beneficiaries. The Dictum of Kenilworth in 1266, however, mitigated the harshness of the treatment of former rebels. This article argues that a respect for the right of inheritance was behind such a change in policy, and was a basic assumption common to the entire polity.