This article provides a re-appraisal of the land dispute between the lord of Leinster, William Marshal, and the bishop of Ferns, Ailbe Ó Máelmuaid, in the 1210s. In 1215, Ailbe petitioned the pope to solve the dispute, leading to the pronouncement of an interdict and excommunication against the Marshal. It is argued that after King John of England died and the Marshal became regent of England in 1216, the papal stance towards the land dispute changed and the Marshal enjoyed favour in Rome, thus shutting the roads to redress for the bishop of Ferns. Now the most powerful man in the Plantagenet dominions, William Marshal used his position as regent to begin the policy of English discrimination against Gaelic-born bishops for episcopal sees in Ireland. This article uses this dispute as a means of exploring Ireland's position within wider Latin Christendom against the background of the papacy's crusading agenda.

中文翻译：

---

基督教世界边缘的教皇、骑士和主教：十三世纪爱尔兰的排斥政治

本文重新评估了 1210 年代伦斯特领主威廉·马歇尔 (William Marshal) 与弗恩斯 (Ferns) 主教艾尔贝·奥·马尔穆艾德 (Ailbe Ó Máelmuaid) 之间的土地纠纷。 1215年，艾尔贝请求教皇解决争端，导致教皇宣布对这位元帅实施禁令并逐出教会。有人认为，1216年英国国王约翰去世，元帅成为英格兰摄政王后，教皇对土地纠纷的立场发生了变化，元帅在罗马受到青睐，从而关闭了弗恩斯主教的申诉之路。现在，威廉·马歇尔是金雀花王朝领土上最有权势的人，他利用摄政王的地位，开始对爱尔兰主教区的盖尔裔主教实行英国歧视政策。本文利用这一争端，以教皇十字军议程为背景，探讨爱尔兰在更广泛的拉丁基督教世界中的立场。