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Geoffroi I de Bretagne, Duke of Brittany, was born 980 to Conan I of Rennes (927-992) and Ermengarde of Anjou (bef967-) and died 1008 of unspecified causes.
Marriage Alliance
The Duke of Brittany had been a major foe of the Duke of Normandy, but Richard II, Duke of Normandy (963-1027) forged a marriage alliance with Duke Geoffrey I of Brittany by marrying his sister Hawise of Normandy (c978-1034) to him and by his own marriage to Geoffrey's sister, Judith of Brittany (982-1017).[1] (See Siblings table below.)
Children
Name | Birth | Death | Joined with |
Alain III de Bretagne (997-1040) | 997 | 1 October 1040 | Bertha de Blois (?-bef1085) |
Éon I de Penthièvre (999-1079) | 999 | 7 January 1079 | Agnes de Cornouaille (?-?) |
Adèle de Bretagne (c1001-1067) | 1001 | 1067 |
Siblings
Name | Birth | Death | Joined with |
Geoffroi I de Bretagne (980-1008) | 980 | 1008 | Hawise of Normandy (c978-1034) |
Judith of Brittany (982-1017) | 982 | 1017 | Richard II, Duke of Normandy (963-1027) |
Judicael of Rennes (aft980-1037) | 980 | 13 June 1037 | |
Catualon of Rennes (aft980-1040) | 980 | 1040 | |
Hernod of Rennes (?-?) | |||
Urvod of Rennes (?-?) |
Footnotes (including sources)
- ^ Neveux 2008, p. 74.