Jean-Jacques de Beausobre

Originally from Morges, Beausobre was the son of Jeanne and Jean de Beausobre, a colonel in the French Régiment de Courten.^[1] He entered his father's regiment as a cadet 1716.^[1] Beausobre served with distinction in the War of the Polish Succession, the War of the Austrian Succession and the Seven Years' War.^[1] Beausobre led the Siege of Geldern in 1757, during the Seven Years' War, and was appointed governor of Guelders until 1761.^[1] He reached the rank of lieutenant-general in 1759.^[1]

In 1743, Beausobre founded his own hussard regiment. He was made a marquis by King Louis XV in 1740.^[1]