Originally, the Duchy of Chartres (duché de Chartres) was the comté de Chartres, a County. The title of comte de Chartres thus became duc de Chartres. This duchy–peerage was given by Louis XIV of France to his nephew, Philippe II d'Orléans, at his birth in 1674. Philippe II was the younger son and heir of the king's brother, Philippe de France, Duke of Orléans.
The northern portion of the County of Blois, bordering on Normandy, was sometimes alienated as the County of Chartres, but the Counts of Blois who possessed it did not use a separate title for it. In 1391, the death of the only son of Guy II, Count of Blois prompted him to sell the inheritance of the County of Blois to Louis of Valois, Duke of Orléans, merging the title into the royal dukedom.
- Married to Luitgarde of Vermandois
- Theobold I was also known as Theobald the Cheat, or Theobald the Old. He was given the nickname “the Cheat” fighting with his neighbours, among them the kings of France, the dukes of Normandy, and the church of Reims.
- Married to Bertha of Burgundy
- 1004-1037 Odo II of Blois († 1037), Count of Blois, Chartres, Reims, Meaux and Troyes, brother of the previous
- Married first in 1003 to Mathilde de Normandie († 1006)
- Married second to Ermengearde of Auvergne
- 1037-1089 Theobald III, Count of Blois (1019 † 1089), Count of Blois, Chartres, Meaux and Troyes son of Eudes II and Ermengearde d'Auvergne
- Married first to Gersende of Maine
- Married second to Adele of Valois
- 1089-1102 Stephen II, Count of Blois († 1102), Count of Blois, Chartres and Meaux, son of Thibaut III and Gersende of Maine.
- Married to Adela of Normandy
- 1102-1151 Theobald II, Count of Champagne († 1152), Count of Blois, Chartres and Meaux, and then Count of Champagne in 1125, son of the former.
- Married in 1123 to Matilda of Carinthia († 1161)
- 1191-1205 Louis I, Count of Blois († 1205), Count of Blois and Chartres, son of the previous and Alix de France
- Married in 1184 to Catherine of Clermont
- 1205-1218 Theobald VI, Count of Blois († 1218), son of the previous
- Married first to Mahaut of Alençon
- Married second to Clemence des Roches
- Married first to Sulpice III d'Amboise
- Married second to Jean II de Montmirail († 1244).
- 1248-1256 Matilda of Amboise († 1256), Countess of Chartres
- Married to Richard II, Count of Beaumont, then to Jean II de Nesle
House of Blois-ChâtillonEdit
- Theobald V, Count of Blois married his second wife in 1164 to Alix of France and father of:
- 1256-1280 John I, Count of Blois († 1280), son of the previous
- Married 1254 to Alice of Brittany (1243-1288)
- 1280-1286 Joan, Countess of Blois († 1292), daughter of the previous
- 1290-1302 and 1310-1325 Charles, Count of Valois, (1270 † 1325), Count of Valois, Alençon, Perche, Chartres, Anjou and Maine
- 1302-1310 John of Valois (1302-1310), Count of Chartres, son of Charles of Valois and Catherine I
- 1325-1328 Louis de Valois (1318-1328), Count of Chartres, son of Charles of Valois and Mahaut of Châtillon
- 1328-1346 Charles II of Alençon (1297 † 1346), Count of Alençon, Chartres, son of Charles of Valois and Margaret of Anjou
Duke of ChartresEdit
Branch of Capetian de ValoisEdit
- Renée de France (1509 † 1575), Duchesse de Chartres, daughter of Louis XII and Anne Brittany, married to Hercules d'Este, Duke of Ferrara
- Alfonso II d'Este, Duke of Ferrara, their son.
Fils de FranceEdit
- 1626-1660 Gaston, Duke of Orléans, (1608–1660) son of King Henri IV
- 1660-1674 Philippe I, Duke of Orléans, (1640–1701 ) son of King Louis XIII the Just
Branch of Capetian d'OrleansEdit
From 1674 until today, the title of Duke of Chartres is the eldest son of the Duke of Orleans
- 1674-1701 Philippe II, said "the Pious" (1674–1723) son of preceding;
- 1703-1723 Louis IV (1703–1752) son of the previous;
- 1725-1752 Louis Philippe I, Duke of Orléans, "the Fat" (1725–1785) son of preceding;
- 1752-1785 Louis Philippe II, Duke of Orléans (1747–1793) son of the previous waives his title in 1792 and takes the name of "Philippe Equality";
- 1785-1793 Louis Philippe III, Duke of Orléans (1773–1850) son of preceding. Access to power in 1830 under the name of Louis-Philippe Ier;
- 1810-1830 Ferdinand-Philippe (1810–1842) son of preceding;
- 1840-1910 Robert, son of Ferdinand-Philippe and thus grandson of King Louis-Philippe of France.
Since 1996 the title is held, as a courtesy title, by
- Michel Dillange. Les Comtes de Poitou - Dukes of Aquitaine (778-1204). La Crèche: Geste éditions, 1995. ISBN 2-910919-09-9
- "Theobald I | count of Blois, Chartres, and Tours".