Counts of Clermont-en-Beauvaisis
The Counts of Clermont-en-Beauvasis first appear in the early 11th century. Its principal town was Clermont, now in the Oise department but then within the ancient county of Beauvaisis in the province of Île-de-France. The county was sold by their descendant, Theobald VI of Blois, to the French crown in 1218. It was first granted as an appanage in 1218 to Philip Hurepel; with the extinction of his line, it was granted in 1268 to the House of Bourbon, and was confiscated with the Duchy of Bourbon in 1527.
- Baldwin I of Clermont (?–1023)
- Baldwin II of Clermont (1023–1042), son of Baldwin I
See also Counts of Montaigu.
House of Creil
- Renaud I of Clermont (1042–1088), son-in-law of Baldwin II
- Hugh of Clermont (1088–1101), son of Renaud I
- Renaud II of Clermont (1101–1161), son of Hugh I
- Raoul I of Clermont (1162–1191), son of Renaud II and Constable of France
House of Blois
He sold Clermont to Philip II of France in 1218.
- Philip Hurepel (1218–1234), son of Philip II of France
- Alberic (1234–?), son of Philip, resigned the title to his sister
- Jeanne (?–1252), daughter of Philip
On her death without heirs, the title reverted to the crown.
House of Bourbon (1268)
- Robert, Count of Clermont (1268–1317)
- Louis I, Duke of Bourbon (1317–1327, 1331–1342), son of Robert
Louis exchanged Clermont for La Marche in 1327, but it was returned to him in 1331
- Peter I, Duke of Bourbon (1342–1356)
- Louis II, Duke of Bourbon (1356–1400)
- John I, Duke of Bourbon (1400–1424)
- Charles I, Duke of Bourbon (1424–1456)
- John II, Duke of Bourbon (1456–1488)
- Charles II, Duke of Bourbon (1488)
- Peter II, Duke of Bourbon (1488–1503)
- Suzanne, Duchess of Bourbon (1503–1521)
- Charles III, Duke of Bourbon (1521–1527)
After the death of Charles III, his fiefs were confiscated by the crown.