House of Blois

House of Blois
Royal house
Arms of the House of Blois
Country	West Francia France Navarre England Jerusalem
Founded	906; 1118 years ago (906)
Founder	Theobald the Elder
Titles	King of England King of Navarre King of Jerusalem Chamberlain of the King of France Constable of France Treasurer of France Grand Butler of France Marshal of France Seneschal of France Grand Bottler of France Bottler of France Regent of France Lesser titles: Governor of Navarre Chamberlain of the Duke of Burgundy Governor of Burgundy Marshal of Burgundy Count palatine Prince of Boisbelle Prince of Achaea Duke of Normandy Duke of Nicaea Count of Blois Count of Champagne Count of Chartres Count of Châteaudun Count of Troyes Count of Beauvais Count of Sancerre Count of Provins Count of Boulogne Count of Reims Count of Aumale Count of Mortain Count of Dreux Count of Meaux Count of Tours Count of Omois Count of Brie Count of Gien Count of La Chapelle Count of Saint-Florentin Count of Château-Thierry Count of Bar-sur-Aube Count of Vitry-le-François Count of Clermont-en-Beauvaisis Co-Governor of Flanders Lieutenant General of Artois Earl of York Viscount of Blois Viscount of Chartres Viscount of Tours Viscount of Troyes Viscount of Dijon Governor of Languedoc Commander of La Villedieu-en-Fontenette Commander of Temple-les-Dole Commander of Sales Commander of Montseugny Lord of Sancerre Lord of Holderness Lord of Sagonne Lord of Lacarre Lord of Champlitte Lord of Sancergeus Lord of Noirmoutier Lord of Meillant Lord of Marchéville Lord of Blet Lord of Beaujeu Lord of Herry Lord of Châteaumeillant Lord of Provins Lord of Cors Lord of Romefort Lord of Craon Lord of Talmay Lord of Flagey Lord of Oiselay Lord of Fénay Lord of Ambrault Lord of Vailly Lord of Villebon Lord of Vaillon Lord of Charpingnon Lord of Charenton Lord of Barlieu Lord of Assigny Lord of Charenton Lord of Condé Lord of Bommiers Lord of Coësmes Lord of Boisgibault Lord of Ouges Lord of Plancy Lord of Soësmes Lord of Larrey Lord of Grancey Lord of Nonancourt Lord of Varennes Lord of Collonges Lord of Brochon Lord of Chalucet Lord of Luzy Lord of Berry Lord of Longuey Lord of Quingey Lord of Chevigny Lord of Vierzon lord of Villargoix Lord of Erry Lord of Partie Lord of Yenville Lord of Clemency Lord of Vonges Lord of Pleurs Lord of Balagny Lord of Vercel Lord of Domprel Lord of Bressey Lord of Ouges Lord of Brochon Lord of Longvy Lord of Flagey Lord of Foucherans Lord of Barges Lord of Mantoche Lord of Villeneuve Lord of Nogent Lord of Champagny Lord of Orval Lord of Épineuil Lord of Bruyères Lord of Argent Lord of Chailly Lord of Dienville Lord of Bressey Lord of Vaux Lord of Collonges Lord of Brochon Lord of Seveux Lord of Châlucet Lord of Mercueil Lord of Saulx Lord of Frolois Lord of Massingy Lord of Drambon Lord of Obsonville Lord of Champvans Lord of La Loupe Lord of Le Pondy Lord of La Grange Lord of La Cordille Lord of La Chapelle Lord of La Chapolette Lord of Saint-Rémy Lord of Saint-Valery Lord of Saint-Août Lord of Saint-Brisson Lord of Montreuil-Bellay Lord of Menetou-Salon Lord of Château-Thierry Lord of La Ferté-Loupière Lord of La Motte-Ternant Lord of La Motte-Sully Lord of Sully-sur-Loire Lord of Pontailler-sur-Saône Lord of Por-sur-Chaon Lord of Aix-dans-Gilon Lord of Mont-de-Villers Lord of Magny-sur-Tille Lord of Vailly-sur-Sauldre Lord of Saulon-la-Rue Lord of Saulon-la-Chapelle Lord of Tart-le-Haut Lord of Tart-l'Abbaye Lord of Tart-le-Bas Lord of Villers-les-Pots Lord of Ainay-le-Vieil Lord of Nogent-lès-Montbard Lord of Heuilley-sur-Saône Lord of Magny-sur-Tille Lord of Venarey-les-Laumes Lord of Granges-sous-Grignon Lord of Lamarche-sur-Saône Lord of Courcelles-sous-Grignon Lord of Châtillon-sur-Loing Lord of Charenton-du-Cher Lord of La Roche-sur-l'Ognon Lord of Saint-Michel-sur-Loire Lady of Cernoy Lady of Aubry Lady of Maupas Lady of Brion Lady of Bueil Baron of Talmay Baron of Flagey Baron of Antigny Baron of Châlus Baron of Montferrand Baron of Drambon Baron of Barges Baron of Rigney Baron of Pusey Baron of Montferrand Baron of Vaux Baron of Port-sur-Saône Cardinal Priest of Santa Sabina Archbishop of Reims Archbishop of Bourges Archbishop of Sens Archbishop-elect of York Bishop of Paris Bishop of Chartres Bishop of Winchester Bishop of Tournai Bishop of Worcester Bishop of Châlons-sur-Marne Bishop-designate of Salisbury Abbot of Glastonbury Abbot of Fécamp Abbot of Westminster Abbot of Cluny Abbot of Lagny Abbot of Norfolk Abbot of Surrey Abbot of Chertsey Abbot of Holme Abbot of St Benet’s Abbey Abbess of Fontevraud Abbess of Sainte-Trinité Abbess of Romsey Prior of Bermondsey Prior of La Charité-sur-Loire Prior of Beaumont Canon of Autun
Estate(s)	Blois, Champagne, Navarre, England, Sancerre, Boulogne, Aumale, etc
Dissolution	1???
Cadet branches	House of Blois-Champagne House of Blois-Chartres House of Blois-Navarre House of Sancerre House of Lacarre House of Sully House of Sully-Beaujeu House of Champlitte House of Champlitte-Pontailler House of Aumale

The House of Blois (French: [blwa]) was a noble family that arose in the Kingdom of West Francia in the early 10th century, and whose prominent members were often named Theobald (Thibaud, Thibault, Thibaut in French).

This lineage came from Theobald the Elder, viscount of Tours before 908. Theobald became viscount of Blois before 922. Afterwards the House of Blois accumulated the counties of Blois, Chartres, Châteaudun and as successors of Herbertians the counties of Troyes, Reims and Meaux - core of the County of Champagne, and finally the kingdom of Navarre.

The House of Blois-Champagne, which was founded by Theobold II in 1025, split into several branches. The House of Blois-Chartres, which was founded by Theobold V of Blois inherited the counties of Blois and Chartres and others in 1152. His descendants would hold the counties until the deaths of Margaret and Isabella, to which the branch became extinct in 1249. The House of Blois-Navarre, which was founded by Theobold I of Navarre, when he inherited the throne from his uncle, Sancho Garcés VI. This branch became the senior line later and eventually became extinct in 1305 with the death of Joan I of Navarre, wife of Philip IV of France. Champagne and Navarre passed to the Capetian dynasty. The House of Sancerre, which was founded by Stephen I, Count of Sancerre, a younger son of Theobold II, Count of Champagne. He inherited the county on his father’s death. This branch became extinct at the death of Margaret of Sancerre in 1418 or 1419. The final branch, the House of Lacarre, which was founded by Juan Enriquez, the illegitimate son of Henry I of Navarre.

When Louis VII of France was greatly threatened by the vast collection of territories in the person of Henry II of England, he chose a wife from the House of Blois-Champagne (Adela of Champagne) as a counterpoise to Angevin power.

When William married the Lady of Sully, Adela, sometime after 1100. He became jure uxoris Count or Lord of Sully. This would make him establish a cadet branch in Sully. This branch would also form its own cadet branch, the House of Sully-Beaujeu, which was when Odo, the son of Gilles III, Lord of Sully, acquired the Lordship of Beaujeu.

Sometime during or past 1126, Odo I was taken over by his maternal family. He then became Lord of Champlitte, which he likely inherited from his mother, Isabella, or from the generosity of his uncle Renaud III, Count of Burgundy.^[1] He in turn would establish a new cadet branch in Champlitte. This Branch would also establish its own branch, the House of Champlitte-Pontailler. Which was when William I, son of Odo I, acquired the Lordship of Pontailler.

King Stephen I of England, 1135–1154, was both a member of the House of Blois and the last Anglo-Norman King, being the grandson of William the Conqueror through his daughter Adela of Normandy.^[2]

A branch of the family was established in Sancerre by Stephen I of Sancerre, a younger son of Theobald II, Count of Champagne. This branch became extinct at the death of Margaret of Sancerre in 1418 or 1419.

• Navarre monarchs family tree
• List of Navarrese monarchs from the House of Blois