Cadet branch of the House of Fiennes
- Coat of Arms
House of Fiennes-Heuchin
Lords of Heuchin, La Porte
and La Planche
- Cadet Branches
House of Bois de Fiennes
Lords of Bois d’Esquerdes, Annequin and Vermelles
Barons of Esnes
Viscounts of Fruges
Counts of Chaumont
Marquises of Fiennes
Issued from Henri I, younger son of Robert I de Fiennes, Lord of Heuchin
- Personal Arms
Henri I de Fiennes
Lord of Bois d'Esquerdes
Younger son of Robert I de Fiennes
Progenitor of Bois de Fiennes branch
Philippe de Bourbourg
Lord of Verlinghem
Castellan of Bourbourg
Alleged scion of Fiennes-Heuchin family
Arms in Herald's Roll