| Name | Lambert I | |
| Title | Count of Nantes and Prefect of the Breton March between 818 and 831 and Duke of Spoleto between 834 and 836 | |
| Suffix | of Nantes, Duke of Spoleto | |
| Gender | Male | |
| Title acquired or granted | Count of Nantes and Prefect of the Breton March between 818 and 831 and Duke of Spoleto between 834 and 836 | |
| Death | 836 | |
| Person ID | I320142974989 | Hurst Improbable Family Tree |
| Last Modified | 11 Feb 2022 | |
| Father | Guy | |
| Family ID | F4493 | Group Sheet | Family Chart |
| Family 1 | Itta | |||
| Children |
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| Family ID | F3267 | Group Sheet | Family Chart | ||
| Last Modified | 11 Feb 2022 | |||
| Family 2 | Adelaide Carolingian | |||
| Marriage | Abt. 800 | |||
| Children |
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| Family ID | F1801 | Group Sheet | Family Chart | ||
| Last Modified | 11 Feb 2022 | |||