Counts and viscounts of Châteaudun

The County of Châteaudun was held in the 9th century by counts who also held the County of Blois. Theobald I was the first viscount of Châteaudun with the appointment of Geoffrey I, founder of the House of Châteaudun. The viscounts were in charge of the government of the county of Châteaudun.Kerrebrouck, Patrick van., Nouvelle histoire généalogique de l'auguste maison de France, vol. 1: La Préhistoire des Capétiens. 1993.

Counts of Châteaudun
These are the known counts of Châteaudun:Bury, J. B. (Editor), The Cambridge Medieval History, Volume V, Contest of Empire and Papacy, Cambridge University Press, 1926
 William (through 834), also count of Blois, reportedly killed by Hastein, Viking chieftain and compatriot of Björn Ironside, son of Ragnar Lothbrok.
 Odo I (834–871), brother of Robert the Strong (count of Anjou), also count of Troyes, Anjou and Blois.
 Odo II (871–886), son of the previous, also count of Troyes
 Robert I (through 886), son of the previous, also count of Troyes
 Adalelm (886–894), nephew of the previous, also count of Troyes.
The period between Adalelm and Theobald is uncertain, but may have been filled by Counts Warnelad and Gello.
 Theobald the Trickster (through  975), also count of Blois and Chartres
 Odo I (975–996), son of the previous, also count of Blois and Chartres
 Theobald II (996–1004), son of the previous and stepson of Robert the Pious, also count of Blois and Chartres
 Odo II (1004–1037), brother of the previous, also count of Troyes, Blois, Chartres, Beauvais and Tours.

Notes

Category:French nobility