| Jean III de Schulemberg, comte de Montejeu | |
| Birth Date: | ca 1597/98 |
| Death Date: | 25 March 1671 |
| Birth Place: | Château de Guincourt |
| Death Place: | Montejeu, Attigny |
| Rank: | Marshal of France |
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| Laterwork: | Governor of Arras |
| Spouse: | Madeleine de Roure |
| Children: | None |
Jean III de Schulemberg, comte de Montejeu[x] (ca 1597/98 – 25 March 1671), of distant Prussian origin,[1] was born at the château de Guincourt,[2] son of Jean, seigneur de Montejeu and his wife[3] Anne, daughter of Jean d'Averhoult, seigneur de La Lobe.
He attended a course of studies at the Academy of Sedan, but at the age of sixteen served as cornet (standard-bearer) to the Protestant Henri de La Tour d'Auvergne, sovereign prince of Sedan, whom he followed at the siege of Vercelli in Piedmont (1614), and then at the battle of Prague, 8 November 1620. In 1621 he proclaimed himself a Roman Catholic though still serving under Henri de La Tour d'Auvergne. With the formal outbreak of hostilities in the Thirty Years' War, he participated at the sieges of Saint-Jean d'Angely and Montauban, then commanded troops repelling the siege of Coblenz;[4] he fought under the maréchal de La Force, commanded troops in Berry and in Artois, was made a field marshal (1639), a lieutenant-general (1650), and then, called from Coblenz to be governor of Arras, made a name for himself at the defense of Arras (1654), facing down and counterattacking the prince de Condé, at the head of Spanish troops; the Great Condé was forced to retire, 25 August. In consequence of this success he was made marquis de Montejeu[5] and a Marshal of France, 16 June 1658. He was made a Chevalier du Saint-Esprit, 31 December 1661.[5] He died in 1671 at his château of Montejeu, Attigny.
He married Madeleine de Roure,[6] daughter of the seigneur de Basancourt; she died in 1674. They left no children.
A brief biographical sketch was published by Suzanne Renée Briet, "Un Maréchal de France inconnu : Jean de Schulemberg, comte de Mont-de-Jeux (1598–1671)", Les cahiers d’études ardennais 4 (1959:38–40) Mezières: Editions de la Société d'Études Ardennaises, Archives departmentales; it was expanded in book form as Le maréchal de Schulemberg (Mezières: Editions de la Société d'Études Ardennaises) 1960.