Cadet branch of the House of Saarbrücken-Commercy
- Coat of Arms
House of Sarrebruck-Commercy
Lords of Commercy-Château-Haut, Venizy and Briquenay
Lords of Pierrepont, Montmirail and La Ferté-Gaucher
Vidames of Laon
Counts of Roucy and Braine
- Cadet Branches
House of Roucy
Lords of Sissonne, Sainte-Preuve, Origny, Grandchamp and Thiérache
Counts of Sissonne
Issued from Louis, illegitimate son of Jean VII de Sarrebruck-Roucy
- Personal Arms
Jean de Sarrebruck
Bishop of Verdun and Châlons
2nd son of Jean III, Lord of Commercy-Château-Haut
Jean VII de Sarrebruck-Roucy
Lord of Pierrepont, Montmirail and La Ferté Gaucher
Count of Roucy
In 1459 assumed the arms and additional name of House of Pierrepont from his mother's family