| Name | Guy I | |
| Title | He was given the abbey of Mettlach in Lotharingia in 840 | |
| Suffix | Duke of Spoleto | |
| Gender | Male | |
| Title acquired or granted | Duke of Spoleto | |
| Death | 860 | |
| Person ID | I320142976409 | Hurst Improbable Family Tree |
| Last Modified | 11 Feb 2022 | |
| Father | Count of Nantes and Prefect of the Breton March between 818 and 831 and Duke of Spoleto between 834 and 836 Lambert I, of Nantes, Duke of Spoleto d. 836 | |
| Mother | Adelaide Carolingian | |
| Marriage | Abt. 800 | |
| Family ID | F1801 | Group Sheet | Family Chart |
| Family 1 | Itta, of Benevento, | |
| Family ID | F3255 | Group Sheet | Family Chart |
| Last Modified | 11 Feb 2022 | |
| Family 2 | ||||
| Children |
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| Family ID | F4520 | Group Sheet | Family Chart | ||
| Last Modified | 11 Feb 2022 | |||