| Name | Gregory I | |
| Suffix | Count of Tusculum, praefectus navalis of Holy Roman Emperors Otto I and Otto II | |
| Gender | Male | |
| Person ID | I322564054059 | Hurst Improbable Family Tree |
| Last Modified | 15 Jun 2026 | |
| Father | Alberic II, Ruler of Rome, b. 912 d. 954 (Age 42 years) | |
| Mother | Alda of Vienne of Italy | |
| Family ID | F761 | Group Sheet | Family Chart |
Family ![]() |
Maria d. 1013 | |||||||||
| Children |
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| Family ID | F4914 | Group Sheet | Family Chart | ||||||||
| Last Modified | 15 Jun 2026 | |||||||||