Guillemette of Neufchâtel

Guillemette of Neufchâtel
Countess of Montbéliard, suo jure
Born	1260
Died	1317 (aged 56–57) Étobon Castle, near Héricourt, Haute-Saône
Noble family	House of Montfaucon (by birth) House of Châlon-Arlay (by marriage)
Spouse(s)	Reginald of Burgundy
Issue	Othenin, Count of Montbéliard Joanna of Burgundy
Father	Amadeus, Count of Neufchâtel
Mother	Jordanna of Arberg

Guillemette de Neufchâtel (1260–1317) was a French noblewoman, the daughter of Amadeus, Count of Neufchâtel and his wife, Jordanna of Arberg. In 1259, her great-aunt Margaret, married Richard of Neufchâtel-en-Bourgogne. As her dowry, she brought the Lordships of Blamont, Châtelot, Belmont, and Cuisance into the marriage. The Lords of Neufchâtel-en-Bourgogne placed Blamont under the protection of the Duke of Burgundy and thus detached it from Montbéliard.

In 1282, Guillemette married Reginald of Burgundy. They had five children:

• Othenin "the Mad" (d. 1339), who succeeded her as Count of Montbéliard
• Agnes of Montbéliard (d. 1377), married Henry I, Count of Montbéliard, who inherited Montbéliard after Othenin's death
• Joanna (d. 1347), married:
  1. Ulrich III, Count of Pfirt
  2. Rudolf Hesso, Margrave of Baden-Baden
  3. William, Count of Katzenelnbogen
• Margaret, married William of Antigny, Prince of Sainte-Croix
• Adelaide, married John II, Count of Chalon-Auxerre

In 1283, her great-grandfather, Theodoric III, Count of Montbéliard (1205–1283) died. He had outlived all his children and in his will, he left the County of Montbéliard to his great-granddaughter Guillemette. Theobald III of Neufchâtel, who was a grandchild of Theodoric III and who wanted Montbéliard for himself, conspired with Reginald's brother Otto IV to have Montbéliard recognized as a fief of Burgundy. To resolve this, Reginald ceded Blamont and Châtelot to Theobald.