Claude-Louis-François Régnier, Count of Guerchy (1715–1767), later Marquis of Blosset, was a French diplomat, Knight of the King's Order and Lieutenant General of his armies.
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Biography
Born in an old Burgundy family, he was the eldest son of Louis de Régnier, Marquis of Guerchy, Count of Druy and Jeanne-Louise de Marion de Druy.
In 1742, he inherited the Château de Nangis and title of Marquis de Nangis from his distant cousin Louis Armand de Brichanteau.
Military career (1729–1763)
Guerchy entered military service in 1729 and gained his first experience in 1730 with the King's Musketeers under his father. He distinguished himself during a series of campaigns: he served in Italy (1733–1734), then on the Rhine (1735), in Bavaria (1741), in Flanders (1741–1747), in the Netherlands (1748), and again in Germany (1757–1760).
During the War of the Austrian Succession, he served at the Sieges of Ypres, Veurne (1744), and Tournai (1745). In the Battle of Fontenoy, he led his regiment in three attacks on the English column.