| Name | Boudewijn III van Vlaanderen | |
| Gender | Male | |
| Person ID | I5340 | Martherus |
| Last Modified | 9 Jun 2004 | |
| Father | Arnulf I van Vlaanderen | |
| Mother | Adela van Vermandois | |
| Family ID | F2963 | Group Sheet | Family Chart |
| Family | Mathilde van Saksen | |||
| Children |
|
|||
| Family ID | F2897 | Group Sheet | Family Chart | ||