| Name | Geoffery | |
| Prefix | Duke of Brittany | |
| Suffix | I | |
Relationship![]() | with Kathleen Alice Jones-Rouse | |
| Gender | Male | |
| Also Known As | Goeffrey I | |
| Occupation | Duke of Brittany | |
| Death | 1008 | |
| Person ID | I1983 | Enchanted Family Tree |
| Last Modified | 14 Mar 2012 | |
| Father | Duke of Rennes Conan, I d. 992 | |
| Mother | Ermengarde, I, of Anjou | |
| Family ID | F905 | Group Sheet | Family Chart |