Jean de Malestroit was a French pseudo-cardinal who served as

Bishop A bishop is an ordained clergy member who is entrusted with a position of authority and oversight in a religious institution. In Christianity, bishops are normally responsible for the governance of dioceses. The role or office of bishop is ca ...

of the

Roman Catholic Diocese of Nantes The Roman Catholic Diocese of Nantes ( la, Dioecesis Nannetensis; french: Diocèse de Nantes; br, Eskopti Naoned) is a diocese of the Latin Rite of the Roman Catholic Church in Nantes, France. The diocese consists of the department of Loire-At ...

from 17 July 1419 until 1443 AD when he resigned. Born in 1375 in

Châteaugiron Châteaugiron (; ; Gallo: ''Chaujon'') is a commune in the Ille-et-Vilaine department of Brittany in northwestern France. It extended on 1 January 2017 by merging with the former communes of Saint-Aubin-du-Pavail and Ossé. Population Inhabit ...

in the

Duchy of Brittany The Duchy of Brittany ( br, Dugelezh Breizh, ; french: Duché de Bretagne) was a medieval feudal state that existed between approximately 939 and 1547. Its territory covered the northwestern peninsula of Europe, bordered by the Atlantic Ocean to ...

, Jean de Malestroit was the sixth known son of Jean de Châteaugiron, lord of

Malestroit Malestroit (; ) is a commune in the Morbihan department of Brittany in north-western Francebr>INSEE commune fileThe town is on the river Oust and part of the Nantes-Brest canal. It has several half-timbered houses. Twinning Malestroit, whose i ...

and Largoët who died in 1374 and his second wife Jeanne Dol Dame de

Combourg Combourg (; br, Komborn; ; Gallo: ''Conbórn'') is a commune in the Ille-et-Vilaine department in Brittany in northwestern France. History The town is part of the Patrimoine Urbain de Bretagne and labelled as one of Les Petites Cités de Caract ...

. He is also the half-brother Thibaud Malestroit (died 1408), who was

bishop of Tréguier A bishop is an ordained clergy member who is entrusted with a position of authority and oversight in a religious institution. In Christianity, bishops are normally responsible for the governance of dioceses. The role or office of bishop is ca ...

in 1378 and

Quimper Quimper (, ; br, Kemper ; la, Civitas Aquilonia or ) is a commune and prefecture of the Finistère department of Brittany in northwestern France. Administration Quimper is the prefecture (capital) of the Finistère department. Geography The ...

in 1383 AD.

Life

Jean Malestroit was

Archdeacon An archdeacon is a senior clergy position in the Church of the East, Chaldean Catholic Church, Syriac Orthodox Church, Anglican Communion, St Thomas Christians, Eastern Orthodox churches and some other Christian denominations, above that o ...

of the

Diocese of Nantes The Roman Catholic Diocese of Nantes ( la, Dioecesis Nannetensis; french: Diocèse de Nantes; br, Eskopti Naoned) is a diocese of the Latin Rite of the Roman Catholic Church in Nantes, France. The diocese consists of the department of Loire-Atl ...

. He was elected bishop of Saint Brieuc in 1405 and then joined the Privy Council of

John VI, Duke of Brittany John V, sometimes numbered as VI, (24 December 1389 – 29 August 1442) bynamed John the Wise ( br, Yann ar Fur; french: Jean le Sage), was Duke of Brittany and Count of Montfort from 1399 to his death. His rule coincided with the height of th ...

and became Governor General of

Brittany Brittany (; french: link=no, Bretagne ; br, Breizh, or ; Gallo language, Gallo: ''Bertaèyn'' ) is a peninsula, Historical region, historical country and cultural area in the west of modern France, covering the western part of what was known ...

's finances in 1406. He was First President of the Chamber of Accounts for Brittany at the beginning of 1408, then

Chancellor Chancellor ( la, cancellarius) is a title of various official positions in the governments of many nations. The original chancellors were the of Roman courts of justice—ushers, who sat at the or lattice work screens of a basilica or law cou ...

, Duke and Treasurer Receiver General of the

a few months later. He was transferred to the diocese of Nantes 17 July 1419. As bishop of Nantes, he launched with the Duke Jean V, on the construction site of the current St. Peter and St. Paul Cathedral. The Duke's son John VI and the bishop laid the first stone 14 April 1434. He also built Château-Gaillard (Vannes) Gilles-de-rais-tribunal

Subsequently, he chaired the

ecclesiastical {{Short pages monitor