Maximilien de Longueval, Comte de Buquoy, Baron de Vaux

Maximilien de Longueval, 1st Count of Bucquoy (16 April 1537 – 29 November 1581), 5th Baron of Vaulx, was a Royal Spanish general.

Early life Longueval was born on 16 April 1537 at Arras, County of Artois, Habsburg Netherlands. He was the son of Jean Adrien de Longueval, Baron of Vaulx (1510–1551), and Jeanne de Rosimbos de Villers (1505–1570). His father was Chief Steward of the Emperor Charles V and a Knight of the Order of the Golden Fleece.

Personal life On 11 December 1567, Longueval was married to Marguerite de Lille de Fresnes (d. 1612), a daughter of Count Adrien de Lille, Lord of Fresnes, and Hélène of Burgundy (a granddaughter of Baudouin of Burgundy, Lord of Fallais, who was an illegitimate child of Philip the Good, Duke of Burgundy). Together they were the parents of: Yolande de Longueval (1569–1648), who married Hermann of Burgundy, Count of Fallais, Governor of Limburg, in . Charles Bonaventure de Longueval, 2nd Count of Bucquoy (1571–1621), who married Maria Maddalena Biglia, daughter of Baldassare Biglia, Count of Saronno, a Milanese nobleman in the entourage of the Archduke Albert, in 1606. Philippe de Longueval

The Count died at Tournai on 29 November 1581. His widow died on 8 August 1612. For his son's efforts in the Thirty Years' War, the family was given the German dominions of Gratzen, Rosenberg and Sonnenberg as well as the partly German, partly Czech dominion of Libiegitz and Zuckenstein Castle by Ferdinand II in 1620 from the confiscated property of the Schwanbergers. From 1620 to 1945 the Buquoys lived mainly in southern Bohemia.