House of Blois

Cadet Branches
House of Champlitte
Lords of Champlitte and Pontailler
Viscounts of Dijon
Issued from Hugh, 3rd son of Thibaud III, Count of Blois from his 2nd marriage
House of Sully
Lords of Sully, La Chapelle d’Angillon, Châlus, Craon and Noirmoutier
Issued from Guillaume, eldest son
of Stephen II, Count of Blois
Guillaume was disinherited in 1107 after which his descendants took the name of their possession of Sully
House of Blois-Champagne
Counts of Champagne, Troyes, Blois and Chartres
Kings of Navarre
Issued from Thibaud IV, 2nd son of Stephen II, Count of Blois

Personal Arms
Stephen II of Blois
Count of Blois and Chartres
Attributed arms
Stephen of Blois
Count of Boulogne
King of England
1135–1141
Attributed arms
4th son of Stephen II
William de Blois
Count of Boulogne and Mortain
Earl of Surrey
3rd son of Stephen of Blois