House of Hainaut
Cadet branch of the House of Flanders
- Coat of Arms
House of Hainaut
Counts of Flanders
Assumed arms from House of Alsace as successors in Flanders
- Cadet Branches
House of Roeulx
Lords of Roeulx, Morlanwelz
and Écaussinnes
Issued from Arnould, younger son of Baudouin II, Count of HainautHouse of Werchin
Lords of Werchin, La Longueville, Thy-Le-Château and Walincourt
Barons of Cysoing
Seneschals of Hainaut
Issued from Guillaume, illegitimate son of Baudouin IV, Count of Hainaut
- Personal Arms