Théodoric was the son of Walter von Bliesbrücken and NN de Gerbéviller. The date and place of his birth have not been found.
His wife is not known. They were married, but the date and place have not been found. Their only known child was Albert (?-?).
| Association | Relationship |
|---|---|
| Bruno I de Rosières (seigneur de Rosières et de Lanfroicourt) | fils ou frère |