Viscounts · Blois, Chartres, Châteaudun · as at first light, 1 January 1200

Viscount of Châteaudun

The hereditary viscounts of the Dunois, the count's lieutenants turned barons, with rights in Châteaudun and their own lordship at Mondoubleau on the Maine border.

Tied by marriage to Preuilly in Touraine and to Fréteval.

Who he is

Name
Geoffrey of Châteaudun (numbered Geoffrey IV or V in different lists)
Title
Viscount of Châteaudun
Since
Not pinned (succeeded his father Viscount Hugh)
Born
about 1170 (one genealogy)
Family
Son of Viscount Hugh and Jeanne of Preuilly (daughter of Gosbert of Preuilly, lord of Le Bouchet and La Guerche); his second wife was of the house of Fréteval. Dies 1218; his son Geoffrey succeeds.
Confidence
medium

Wikipedia article on his son-numbered namesake and a genealogy giving about 1170 to about 1218.

Overlord

Louis, count of Blois, as count of Châteaudun

What it holds

  • Viscomital rights in Châteaudun (justice, dues) under the count
  • Mondoubleau and its castellany (not pinned for 1200)
  • The forest of Épinat (attested 1213)

How it was acquired

Hereditary.

Allies and rivals

Kin of Preuilly and Fréteval; vassal of Louis of Blois.

How things stand that morning

Holds under the count; quiet.

Wealth

Viscomital dues of Châteaudun, Mondoubleau market, forests.

Military

Castle of Mondoubleau.

Places of note

  • Mondoubleau: Castle
  • Châteaudun: Viscomital rights

Where the sources disagree

Evidence: Name and death date attested; succession date and Mondoubleau tenure in 1200 not pinned.

On the map: Only Mondoubleau is drawn; the viscomital rights in Châteaudun are not territorial.

Primary sources for Blois

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

  • Chronicle of Robert of Auxerre, Robert of Auxerre (Robert of Saint-Marien) (about 1190 to 1211; continued at Saint-Marien to 1227). A universal chronicle whose last twenty years are contemporary and well informed from Burgundy and the Auxerrois. Read online
  • Deeds of Philip Augustus, Rigord (about 1186 to 1206, in stages). The French court's own chronicle for the year, from the monk of Saint-Denis who called himself the king's chronographer. Read online
  • The Conquest of Constantinople (Villehardouin), Geoffrey of Villehardouin (about 1207 to 1213). Opens with the preaching of Fulk of Neuilly and the tournament at Ecry (28 November 1199) where Theobald III of Champagne and Louis of Blois took the cross, then the taking of the cross by Baldwin of Flanders, Hugh of Saint-Pol, Geoffrey of Perche and others through early 1200, the assemblies at Soissons and Compiegne in 1200, and the six envoys sent to Venice in the winter of 1200 to 1201. Read online
  • The Conquest of Constantinople, Robert de Clari, knight of Picardy (about 1205 to 1216). A rank-and-file crusader's account that begins with the preaching of the crusade and the taking of the cross in 1199 to 1200 by the counts of Flanders, Blois and Champagne and by the Picard lords, among them Peter of Amiens, Robert's own lord, then the negotiations with Venice. Read online
  • Documents of the French Royal Treasury of Charters, vol. 1 (755 to 1223) (755 to 1223; the archive was organised from the 1190s). The treaties and bonds the French crown kept in its own archive, printed in date order. Read online
  • The Acts of Philip Augustus, with Delisle's Calendar, Various (the French royal chancery) (1179 to 1223). The king's own charters and treaties for the year: the peace of Peronne with Baldwin IX in January 1200, the treaty of Le Goulet with John on 22 May 1200, the marriage settlement for Louis and Blanche, the privilege for the scholars of Paris, grants to towns, abbeys and Norman lords, and the first acts of the king's new acquisitions in the Vexin, Evreux and Berry. Read online

Sources and studies

  1. Geoffrey V, Viscount of Châteaudun (Wikipedia)
  2. Genealogy Online: Geoffroy III de Châteaudun (about 1170-1218)

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.