House of Blois

The House of Blois () is a lineage derived from the Frankish nobility, whose principal members were often named Theobald (Thibaud, Thibault, Thibaut in French).

History
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. 

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 Champagne (Adela of Champagne) as a counterpoise to Angevin power.

The senior line of the House of Blois became extinct with the death of Joan I of Navarre, wife of Philip IV of France, in 1305. Champagne and Navarre passed to the Capetian dynasty.

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. 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.

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.

Family tree

Rulers

Genealogy

 Theobald the Old, Viscount of Blois
 Theobald I, Count of Blois
 Hugh, Archbishop of Bourges
  Odo I, Count of Blois
 Theobald II of Blois
 Odo II, Count of Blois
 Theobald III, Count of Blois
 Stephen, Count of Blois
 William, Count of Sully
 Odo Archambaud, Lord of Sully
 Gilles III, Lord of Sully
 Archambaud IV, Lord of Sully
 Henry I, Lord of Sully
 Henry II, Lord of Sully
 Henry III, Lord of Sully
 Henry IV, Lord of Sully
 John II, Lord of Sully
 Louis I, Lord of Sully
 Marie, Lady of Sully
 Odo I, Lord of Beaujeu
 Odo II, Lord of Beaujeu
 Odo III, Lord of Beaujeu
 Gilles, Lord of Beaujeu
 Guyon, Lord of Beaujeu
 William I, Lord of La Chapellette
 William II, Lord of La Chapellette
 William III, Lord of La Chapellette
 William IV, Lord of Vouillon
 Pierre I, Lord of Erry
 Pierre II, Lord of Erry
 Jeanne, Lady of Erry
 Odo, Lord of La Motte-Sully
 Elinor, Lady of La Motte-Sully
 Henry, Archbishop of Bourges
  Odo, Bishop of Paris
 Henry, Abbot of Fécamp
 Ranier, Abbot of Cluny
 Elizabeth, Abbess of Sainte-Trinité
 Theobald II, Count of Champagne
 Henry I, Count of Champagne
 Henry II, Count of Champagne
  Theobald III, Count of Champagne
  Theobald I of Navarre
 Theobald II of Navarre
  Henry I of Navarre
  Joan I of Navarre
 Theobald V, Count of Blois
  Louis I, Count of Blois
  Theobald VI, Count of Blois
  Margaret, Countess of Blois
 William White Hands
  Stephen I of Sancerre
 William I, Count of Sancerre
  Louis I, Count of Sancerre
 John I, Count of Sancerre
 Stephen II, Count of Sancerre
 John II, Count of Sancerre
  Louis II, Count of Sancerre
 John III, Count of Sancerre
  Margaret, Countess of Sancerre
 Louis de Sancerre, Constable of France
 Robert, Lord of Menetou
 Theobald, Lord of Sagonne
  Stephen, Lord of Vailly-sur-Sauldre
 Theobald, Bishop of Tournai
  Louis, Lord of Sagonne
  Robert, Lord of Menetou-Salon
  Stephen II, Lord of Châtillon-sur-Loing, Grand Butler of France
  Stephen III, Lord of Châtillon-sur-Loing
 Stephen, King of England
 Eustace IV, Count of Boulogne
  William I, Count of Boulogne
  Henry of Blois, Bishop of Winchester
 Philip, Bishop of Châlons-sur-Marne
 Odo V, Count of Troyes
  Hugh, Count of Champagne
  Odo I of Champlitte (disowned by father)
 Odo II of Champlitte
 Oda, Lady of Champlitte
  William of Champlitte, 1st prince of Achaea
 William II, Viscount of Dijon
 Hugh, Lord of Grancey
 Robert, Lord of Larrey
 Odo III, Lord of La Marche
  Stephen II, Count of Troyes and Meaux
  Odo, Count of Champagne
  Stephen, Count of Aumale
  William le Gros, 1st Earl of Albemarle
  Richard, Archbishop of Bourges

Arms

See also 

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

References

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Blois
Champagne
Navarre
Navarrese monarchs
Navarrese royal houses