:This page is about Thurstan of Bayeux (1070 – 1140) who became Archbishop of York. Thurstan of Caen became the first Norman Abbot of Glastonbury in circa 1077.
Thurstan or Turstin of Bayeux ( – 6 February 1140) was a medieval Archbishop of York, the son of a priest. He served kings William II and Henry I of England before his election to the see of York in 1114. Once elected, his consecration was delayed for five years while he fought attempts by the Archbishop of Canterbury to assert primacy over York. Eventually, he was consecrated by the pope instead and allowed to return to England. While archbishop, he secured two new suffragan bishops for his province. When Henry I died, Thurstan supported Henry's nephew Stephen of Blois as king. Thurstan also defended the northern part of England from invasion by the Scots, taking a leading part in organising the English forces at the Battle of the Standard (1138). Shortly before his death, Thurstan resigned from his see and took the habit of a Cluniac monk.
Early life
Thurstan was the son of a canon of St Paul's in London named Anger, Auger or Ansgar, who held the prebend of Cantlers. Another son of Anger, Audoen, was later Bishop of Évreux. Thurstan's mother was named Popelina. in the Bessin region of Normandy. Before 1104 the father was given the prebend of Cantlers by Maurice, Bishop of London, and the family moved to England.
Early in his career, Thurstan held the prebendary of Consumpta per mare in the diocese of London, and served both William Rufus and Henry I as a royal clerk. At some point in Thurstan's early career, he visited Cluny, where he vowed to become a Cluniac monk later in his life. and it was Henry who obtained Thurstan's election as Archbishop of York in August 1114. He was ordained a deacon in December 1114 and ordained a priest on 6 June 1115
Controversy and exile
The Archbishop of Canterbury, Ralph d'Escures, refused to consecrate Thurstan unless the archbishop-elect made a profession of obedience to the southern see. Thurstan refused to make such a profession, and asked the king for permission to go to Rome to consult Pope Paschal II. Henry I refused to allow him to make the journey, but even without a personal appeal from Thurstan, Paschal decided against Canterbury. At the Council of Salisbury in 1116 the English king ordered Thurstan to submit to Canterbury, but instead Thurstan publicly resigned the archbishopric. On his way to the council, Thurstan had received letters from Paschal II that supported York and commanded that he should be consecrated without a profession. Similar letters had gone to Ralph d'Escures from the pope, ordering Ralph, as Archbishop of Canterbury, to consecrate Thurstan. After the news of the letters became public, Thurstan's resignation was ignored, and he continued to be considered the archbishop-elect. Calixtus had earlier promised Henry that he would not consecrate Thurstan without the king's permission, which had still not been granted. He was recalled to England in early 1121. Thurstan managed to secure the resurrection of the Diocese of Galloway, In 1133, Thurstan, who had received papal permission to found an entirely new diocese, consecrated Æthelwold as the first bishop of the new see of Carlisle. The pope based his decision on the fact that Canterbury's supporting documents had been forged.
thumb|right|125px|A monument at the site of the Battle of the Standard, where the troops Thurstan had mustered defeated the Scots.
Thurstan supported King Stephen after Henry I's death in 1135, and appeared at Stephen's first court at Easter held at Westminster. Thurstan negotiated a truce at Roxburgh in 1138 between England and Scotland. It was Thurstan who mustered the army which defeated the Scots at the Battle of the Standard on 22 August 1138 near Northallerton, Yorkshire. Thurstan did not take direct part in the battle., but he created the standard that gave the battle its name, by putting a ship's mast in a cart and hanging the banners of Saint Peter of York, Saint John of Beverley, and Saint Wilfrid of Ripon on the mast. The Scots had invaded, attempting to aid the Empress Matilda, the daughter of Henry I and Stephen's rival for the throne. On 21 January 1140 Thurstan resigned his see and entered the order of the Cluniacs at Pontefract
Legacy
Thurstan gave land to many of the churches of his diocese and founded several religious houses. He founded the first nunnery in Yorkshire when he founded St Clement's between 1125 and 1133. He obtained for Whitby Abbey a papal privilege of protection as well as giving his privilege to the abbey. He also helped found the Cistercian Abbey of Fountains, Thurstan helped the hermitess Christina of Markyate at several points in her career, and tried to persuade her to become the first prioress of his foundation of St. Clement's. He was a patron to the Augustinian Hexham Priory, founded by his predecessor at York, as well as helping the foundation of Bridlington Priory, another Augustinian house. He was a sincere reformer and opposed to the election of unfit men to the episcopacy. When Pope Innocent II asked Thurstan's opinion on the elevation of Anselm of St Saba, who was Abbot of Bury St. Edmunds, to become Bishop of London, Thurstan replied, "If we consider his life and reputation, it would be much more fitting to remove him from his abbacy than to promote him to be bishop of London." Anselm was not confirmed as bishop.
Thurstan's nephew was Osbert de Bayeux, who became an archdeacon at York, and in 1154 was accused of the murder of William of York, one of Thurstan's successors at York.