Conan I was the count

Count

A count or countess is an aristocratic nobleman in European countries. The word count came into English from the French comte, itself from Latin comes—in its accusative comitem—meaning "companion", and later "companion of the emperor, delegate of the emperor". The adjective form of the word is...

 of Rennes

Rennes

Rennes is a city in the east of Brittany in northwestern France. Rennes is the capital of the region of Brittany, as well as the Ille-et-Vilaine department.-History:...

 from 958 and duke of Brittany

Duke of Brittany

The Duchy of Brittany was a medieval tribal and feudal state covering the northwestern peninsula of Europe,bordered by the Alantic Ocean on the west and the English Channel to the north with less definitive borders of the Loire River to the south and Normandy to the east...

 from 990 to his death. He became ruler of Brittany

Brittany

Brittany is a cultural and administrative region in the north-west of France. Previously a kingdom and then a duchy, Brittany was united to the Kingdom of France in 1532 as a province. Brittany has also been referred to as Less, Lesser or Little Britain...

 after a period of civil and political unrest, having first succeeded his father Judicael Berengar

Judicael Berengar

Judicael alias Berengar was Count of Rennes in the mid-to-late 10th century. There are conflicting accounts of his parentage, one popular solution making him son and successor to a count Berenger by a daughter of Gurvand, Duke of Brittany...

, as count of Rennes.

Family and children

He married Ermengarde of Anjou

Ermengarde of Anjou, Duchess of Brittany

Ermengarde of Anjou, Duchess of Brittany was the daughter of Geoffrey I of Anjou and Adele of Vermandois.She married Conan I of Rennes, Count of Rennes and Duke of Brittany and had the following children:...

, daughter of Geoffrey I of Anjou

Geoffrey I of Anjou

Geoffrey I of Anjou , known as Grisegonelle , was count of Anjou from 960 to 987. He succeeded his father Fulk II...

 and Adele of Vermandois

Adele of Meaux

Adele of Meaux Also known as "Adele of Vermandois" was a daughter of Robert of Vermandois and Adelaide-Werra de Chalon.-Marriage:...

 and had the following issue:

• Judith
  Judith of Brittany
  Judith of Brittany was the daughter of Conan I, Duke of Brittany and Ermengarde of Anjou, and the mother of Robert the Magnificent.She was the first wife of Richard the Good, Duke of Normandy, whom she married in 996. They had six children:...
  
   (982–1017), married Richard II, Duke of Normandy
  Duke of Normandy
  The Duke of Normandy is the title of the reigning monarch of the British Crown Dependancies of the Bailiwick of Guernsey and the Bailiwick of Jersey. The title traces its roots to the Duchy of Normandy . Whether the reigning sovereign is a male or female, they are always titled as the "Duke of...
  
  
• Judicael, count of Porhoet
  Porhoët
  The first recognised vicomte de Porohoet was Guithenoc , formerly of Guilliers. Guithenoc was born in Guilliers, Moribihan, Brittany, Western France. He married Allurum of Guilliers. He became Vicomte, and in about 1008 he moved to La Trinite, in Porhoet, Morbihan, Brittany. There he built...
  
   (died 1037)
• Geoffrey, the eventual heir
• Catuallon, abbot of Redon
• Hernod

Conan died in battle against his brother-in-law Fulk Nerra, count of Anjou

Fulk III of Anjou

Fulk III , called Nerra after his death, was Count of Anjou from 21 July 987 to his death. He was the son of Geoffrey Greymantle and Adelaide of Vermandois....

 at the Battle of Conquereuil

Battle of Conquereuil

The Battle of Conquereuil was fought on July 27, 992 AD between the Bretons under Duke Conan I of Rennes and the Angevins under Duke Fulk the Black...

 and is buried in Mont Saint Michel Abbey

Abbey

An abbey is a Catholic monastery or convent, under the authority of an Abbot or an Abbess, who serves as the spiritual father or mother of the community.The term can also refer to an establishment which has long ceased to function as an abbey,...

.