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Guy I of Clermont-Nesle
Guy Ier de Clermont-Nesle
Personal details
Born c. 1255
Died 1302
Spouse(s) Marguerite of Mello
Marguerite of Thourotte
possibly more
Blason Guy Ier de Clermont de Nesle

One coat of arms used by Guy I of Clermont

Guy I of Clermont-Nesle (c.1255 – July 11, 1302) was a Marshal of France, Seigneur (Lord) of Offemont jure uxoris, and possibly of Ailly, Maulette and Breteuil. He might have been a Seigneur of Nesle also, or used the title "Sire of Nesle" due to his family. Difficulties about the seigneurie of Breteuil are present, and the status of Ailly and Maulette in relation to Breteuil.


Guy was the youngest son of Simon II of Clermont (c. 1216 - 1286) by Adele of Montfort (d. 1279), daughter of Amaury VI of Montfort. He had three brothers and at least one sister, whose son was the famous Robert VIII Bertrand (fr), also Marshal of France.

In 1296 he became Marshal of France, when his elder brother Raoul of Clermont, Viscount of Châteaudun and Seigneur of Nesle was already the Constable and Grand Chamberlain of France. The French King Philip "the fair" (1268 - 1314) sent the two brothers to attack the enemy at the Siege of Lille (1297), where they were victorious and took a large number of prisoners. Some descendant to Guy is said have assisted in the conquest of Guyenne by Philip's grandson King Edward III of England (1312 - 1377).[citation needed]

Together with his brother, under Robert II, Count of Artois as commander, he fought in the Franco-Flemish War (1297-1305) against the County of Flanders. In 1302 in the Battle of the Golden Spurs at Kortrijk, the French army was utterly defeated, all three killed and the Flemish regained independence. The brutal, unlawful execution of Walram, Count of Jülich that had surrendered to the French in a previous battle (Furnes 1297) was fiercely avenged on the battlefield.

Marriage and issueEdit

Guy married firstly c. 1268 Marguerite, a daughter probably of Guillaume or Dreux (d. 1249) of Mello (de), Seigneur of Saint-Brisdisambiguation needed. She was anyway a descendant of Dreux IV of Mello sr. (1137/38 - 1218), but the exact family relations are very difficult to determine.

Secondly, in c. 1285, he married Marguerite of Thourotte, Dame of Offemont and Thourotte, daughter of Ansould II of Thourotte (de) (d.c. 1294) and Jeanne (of Abbecourtdisambiguation needed?). They had five probable children with descendants:

  • Mahaut of Clermont-Nesle, married c.1320 to Bertrand VI of Moreuil (fr) (d.a. 1350), Seigneur of Moreuil and Cœuvres, in 1322 ? made Marshal of France and later Grand Queux of France. One of their children was:
    • Marguerite of Soissons, Dame of Moreuil, married 1287 to Jacques I of Croëy. They had:
      • Jacques II of Croëy, married Marie of Picquigny and had issue.
  • Péronne/Petronille of Clermont-Nesle (c. 1290 - c. 1320), married c. 1320 to Jean of Chérisy-Quierzy, Seigneur of Muret and Busancy. They had:
    • Jeanne of Chérisy, married c. 1345 to Mathieu IV of Royedisambiguation needed, Seigneur of Beausault and Busancy. They bore:
      • Guy III de Roye (c. 1340 - 1409), Bishop of Verdun.
      • Jean of Roye (d. 1396), married Jeanne of Béthune, and had issue.
  • Alix of Clermont-Nesle (c. 1300 - a. 1337), married c.1319 to Jean II of Dampierre (de) (d.a. 1337), Seigneur of Saint-Dizier, Vignory and L’Ecluse, son of Guillaume ("William") IV of Dampierre (1258 - a. 1314), Seigneur of Saint-Dizier, Eureville, Humbécourt and Aurainville, son of Laura of Lorraine and grandson of Matthias II, Duke of Lorraine. Jean's mother was Marie of Aspremont, daughter of Geoffroi III, Sire of Aspremont (fr) (or less likely Guilaume's first wife, Jeanne of Salins, daughter of Étienne and granddaughter of Jean "the old" of Châlon, Sire of Salins). Alix and Jean had three known children:
    • Jean (d. 1367/73), Seigneur of Saint-Dizier and Vignory. Married b.1334 Marie of Bar-Pierrepontdisambiguation needed, daughter of Erard of Bar (d. 1335), Seigneur of Pierrepontdisambiguation needed, son of Theobald II, Count of Bar, and her mother was Isabelle of Lorraine, daughter of Theobald II, Duke of Lorraine. Jean and Marie had about six children, including:
      • Edouard of Saint-Dizier (d. 1401), Seigneur de Saint-Dizier, de Vignory and Veuilly.
    • Isabelle (d. 1371), Dame of Montenois ?. Married Jean of Châtillon-sur-Marne (d.a. 1377), Seigneur of Gandelus and Durydisambiguation needed, a son of Guillaume IV of Dampierre (de) (1258 - a. 1314).
    • Jeanne, married to Jean le Mercier, Seigneur of Noviant-au-Pré. They had:
      • Guillemette le Mercier, married to Renaud of Coucydisambiguation needed and had issue.

A possible son, a probable alternative is that his cousin Jean of Tartigny, son of Raoul (II) of Tartigny (d.a. 1243), a brother of Simon II of Clermont, was the father:

  • Raoul IV of Clermont-Nesle (c. 1285 - 1321), Seigneur of Montgobert, Thorigny, Ablancourt, Bichancourt and Tartigny. Seigneur of Breteuil/Beausault ? (See note below). Raoul married b. 1310 Jeanne of Chambly (d.a. 1371), Dame of Montgobert, Ablancourt, Fay-aux-Loges and Sotteville-en-Caux, owner of 17 castles, daughter of Pierre VII of Chambly (fr), Seigneur of Viarmes and Thorigny, son of Pierre VI of Chambly (their genealogy is disputed). They had presumably the following children:
    • Raoul V of Clermont (c. 1310 - b. 1354), Seigneur of Thorigny and Paillart. Married Isabelle of Boves-Coucy, Dame of Paillart and Tartigny, daughter of Jean of Boves-Coucy.[1]
    • Jean I of Clermont aka "Tristan" (c. 1320 - 1356), Seigneur of Chantilly, Villemomble and Beaumontdisambiguation needed, Marshal of France from 1352 (when his cousin Guy II had died). Married Margalide (Marguerite) of Mortagnedisambiguation needed and Chef-Boutonne, viscountess of Aulnaydisambiguation needed, daughter of Pons/François, viscount of Aulnay, Seigneur of Mortagne. Possibly also married with Jacqueline Quiéret of La Vacquerie.
    • Jeanne of Clermont (d.a. 1342), Married Guillaume IV/V Le Bouteiller de Senlis (fr), Seigneur of Chantilly, Montmélian and Moucy-Le-Neuf, without issue.
    • Robert of Clermont (d. 1358), Seigneur of Beaumontdisambiguation needed. No issue.
    • Robert of Clermont (d. 1371), Seigneur of Fay-aux-Loges and Sotteville-en-Caux. No issue.
    • Marguerite of Clermont (b. 1320), Dame of Montgobert. Married Nicolas III, Seigneur of Menou (1305 - 1356). Issue unknown.

Guillaume I and Jean I died in the disastrous Battle of Poitiers on 19 September 1356, where the French King Jean II "the good" was taken captive together with his son.

Note: The property of Breteuil had been inherited from Valeran III (fr) to his eldest daughter Alix, married to Count Raoul "the red" (fr), and then the youngest, Amicie. When Amicie died in 1226, there seems to have been no obvious legitimate heir and the property went to the French Crown. The same year the property was redeemed with 3000 pounds by "Clémence, wife of Simon of Beausault, and Jeanne of Dargies", assumed to be sisters, in accordance to a previous agreement between Amicie and the king. They are assumed to be relatives within the Clermont family, possibly daughters of Amicie's sister Mathilde or even Amicie herself.[2] The connection with later Seigneurs like presumably Simon, Guy and Raoul is not clear. Several suggestions have been made to resolve the question. Also which distinction should be made between the titles Seigneur of Beausault or Breteuil in this context, and some heir can have one title and others the other in the genealogy. The property may have been divided or the title may have been used honorifically. Another possibility is that either the attribution of Seigneurs of Breteuil to the line of Guy I, or the family relationship is wrong. The Counts of Clermont-en-Beauvaisis belonged to this house of Clermont until the death of Raoul I "the red" (fr) in 1191. His daughter Catherine married Louis I, Count of Blois and their son Theobald VI, Count of Blois sold the County of Clermont-en-Beauvaisis to the French Crown in 1218.

For more about this problem, see Simon II of Clermont.


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