William of Champvent or Guillaume de Champvent (c.1239 – 21 March 1301) was the son of Henri, Lord of Champvent, brother of Othon de Champvent and

Pierre de Champvent Pierre de Champvent (also Peter de Chauvant or Chauvent) († between September 1302 and March 29, 1303) was a noble originally from Savoy who made a career as a military and courtier in England. Origin and move to England Pierre de Champvent ...

, cousin of

Otto de Grandson Otto de Grandson (c. 1238–1328), sometimes numbered Otto I to distinguish him from later members of his family with the same name, was the most prominent of the Savoyard knights in the service of King Edward I of England, to whom he was the cl ...

. He followed

Peter II, Count of Savoy Peter II (120315 May 1268), called the Little Charlemagne, held the Honour of Richmond, Yorkshire, England (but not the Earldom), from April 1240 until his death, holder of the Honour of l’Aigle, and was Count of Savoy (now part of France, Swit ...

to England and served King

Henry III of England Henry III (1 October 1207 – 16 November 1272), also known as Henry of Winchester, was King of England, Lord of Ireland, and Duke of Aquitaine from 1216 until his death in 1272. The son of King John and Isabella of Angoulême, Henry a ...

as a diplomat. His church career in England, being a dean of St. Martin's Le Grand in London from 1262. His influence at court in 1262 is evidenced by his joining the Savoyard witness list for a charter relating to Queen Alianor’s dowry. Upon his departure back to Lausanne

Edward I of England Edward I (17/18 June 1239 – 7 July 1307), also known as Edward Longshanks and the Hammer of the Scots, was King of England and Lord of Ireland from 1272 to 1307. Concurrently, he ruled the duchies of Aquitaine and Gascony as a vassa ...

would appoint

Louis I of Vaud Louis I (1249/50 – 1302) was the Baron of Vaud. At the time of his birth he was a younger son of the House of Savoy, but through a series of deaths and his own effective military service, he succeeded in creating a semi-independent principality in ...

to St. Martin's Le Grand He was elected

Bishop of Lausanne The Bishop of Lausanne (French: ''Évêque de Lausanne'') was a Prince-Bishop of the Holy Roman Empire (since 1011) and the Ordinary of the diocese of Lausanne, Switzerland (Latin: ''Dioecesis Lausannensis''). Bern secularized the bishopric in ...

in 1273, he initiated a vigorous policy of restoring the rights of his Church, which set him against

Savoy Savoy (; frp, Savouè ; french: Savoie ) is a cultural-historical region in the Western Alps. Situated on the cultural boundary between Occitania and Piedmont, the area extends from Lake Geneva in the north to the Dauphiné in the south. Savo ...

and the bourgeoisie of

Lausanne , neighboring_municipalities= Bottens, Bretigny-sur-Morrens, Chavannes-près-Renens, Cheseaux-sur-Lausanne, Crissier, Cugy, Écublens, Épalinges, Évian-les-Bains (FR-74), Froideville, Jouxtens-Mézery, Le Mont-sur-Lausanne, Lugrin (FR-74), ...

, a policy he led by relying on the Empire. He participated with

in the succession to

Philip I, Count of Savoy Philip I (1207 – 16 August 1285) was Count of Savoy from 1268 to 1285. Before this, he was Bishop of Valence (1241–1267) and Archbishop of Lyon (1245–1267). Ecclesiastical career Philip was born in Aiguebelle, Savoy, as the eighth and last ...

in 1285 which led to the creation of the Barony of Vaud, entrusted to

. He built the episcopal castles of

Bulle Bulle (; frp, Bulo ) is a municipality in the district of Gruyère in the canton of Fribourg in Switzerland. In January 2006 Bulle incorporated the formerly independent municipality of La Tour-de-Trême. History Ancient times Bulle is first ...

and

Lucens Lucens () is a municipality in the Broye-Vully district in the canton of Vaud in Switzerland. In 2017 the former municipalities of Brenles, Chesalles-sur-Moudon, Cremin, Forel-sur-Lucens and Sarzens merged into the municipality of Lucens. Hist ...

; he acquired that of Glérolles. In 1275 took place the consecration of the

Lausanne Cathedral The Cathedral of Notre Dame of Lausanne is a church located in the city of Lausanne, in the canton of Vaud in Switzerland. It belongs to the Evangelical Reformed Church of the Canton of Vaud. History Construction of the cathedral began as ea ...

Pope Gregory X Pope Gregory X ( la, Gregorius X; – 10 January 1276), born Teobaldo Visconti, was head of the Catholic Church and ruler of the Papal States from 1 September 1271 to his death and was a member of the Secular Franciscan Order. He was ...

References

{{Authority control Bishops of Lausanne 13th-century Roman Catholic bishops in the Holy Roman Empire Savoyards in Thirteenth Century England Year of birth uncertain 1301 deaths

Guillaume Guillaume may refer to: People * Guillaume (given name), the French equivalent of William * Guillaume (surname) Other uses * Guillaume (crater) See also * '' Chanson de Guillaume'', an 11th or 12th century poem * Guillaume affair, a Cold War espi ...