Étienne was born about 1055, the son of Éon I de Bretagne and Agnès Canhiart. The place is not known.
He died on 21 APR 1137. The place is not known.
His wife was Havoise de Guingamp. They were married, but the date and place have not been found. Their nine known children were Olive (c1095-c1175), Agnorie (c1105-1167), Maud (1106-?), Alain III (c1107-1146), Geoffroy II Boterel (c1110-1148), Henri I (c1110-1183), Théophanie (c1115-?), Marguerite (?->1136) and Eléonore (?-?).
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Étienne I de Penthièvre |
Éon I de Bretagne |
Geoffroy I Bérenger de Bretagne |
Conan I de Bretagne |
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Ermengarde d'Anjou |
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Havoise de Normandie |
Richard I de Normandie |
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Gunnor de Crépon |
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Alain Canhiart |
Budic IV de Cornouaille |
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Judicaël |
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Mélisende du Maine |
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1055 |
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| Death | 21 APR 1137 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | FROM 1079 | comte de Trégor et de Goëlo (Guinganp et Tréguier) | ||||
| Nobility Title | FROM 1079 | seigneur de Goëlo | ||||
| Nobility Title | comte de Penthièvre |
Note 1