| Male Robrecht I van Vlaanderen |
| Birth | ||
| Death | ||
| Burial | ||
| Marriage | ||
| Father | Boudewijn V van Vlaanderen | F2398 Group Sheet | |
| Mother | Adelheid van Frankrijk | F2398 Group Sheet | |
| Female Gertrudis van Saksen |
| Birth | ||
| Death | ||
| Burial | ||
| Other Spouse | Floris I van Holland | F2522 | |
| Marriage | ||
| Father | Bernhard II van Saksen | F2890 Group Sheet | |
| Mother | Eilika van Schweinfurt | F2890 Group Sheet | |