Boudewijn I van Bentheim was born after 1180 to Otto von Bentheim (c1142-aft1208) and Alveradis van Cuijk Arnsberg (1150-1205) and died 1248 of unspecified causes. He married Jutta (?-?) .
Children
| Name | Birth | Death | Joined with |
| Otto II von Bentheim (bef1279-aft1279) | 1279 | 1279 | Heilwig von Tecklenburg (c1219-c1264) |
| Bertha van Bentheim (1224-1272) | 1224 | 1272 | Hendrik II van Dale (-c1272) |