Guy Aldonce de Durfort, duc de Lorges, Marshal of France, (1630–1702) fought in the Franco-Dutch War mostly on the Rhine under his uncle Marshal Turenne, but in 1673 he was seconded to the Siege of Maastricht. Back on the Rhine, he fought at Entzheim in 1674, at Turckheim in January 1675, and at Sasbach in July 1675, where Turenne fell. He distinguished himself at the retreat from Sasbach and the ensuing Battle of Altenheim. In the Nine Years' War he commanded the Rhine army and took the city and the castle of Heidelberg in 1693. He is often mentioned in Saint-Simon's Mémoires as he was the author's father-in-law. Birth and origins Guy Aldonce was born on 22 August 1630, at the Château de Duras, the fourth son of Guy Aldonce de Durfort (1605-1665) and Elisabeth de La Tour d'Auvergne. His father was marquis of Duras, comte de Rauzan and comte de Lorges, as well as maréchal de camp in the French army. The Durfort family held Duras since the 14th century. Guy's mother was a daughter of Henri de La Tour d'Auvergne and sister of the Marshal Turenne. Both his parents were Calvinists. Guy was the fourth son, but his twin brother, Armand, died as an infant and he thereafter occupied the third position and was often counted as the third son. His father distributed his subsidiary titles as courtesy titles among his sons. Guy was thus, after the death of his twin brother, styled comte de Lorges and was called Lorges, sometimes spelt Lorge, notably by Saint-Simon. He was numbered "Guy Aldonce II de Durfort" in the Durfort family, whereas his father was numbered "Guy Aldonce I de Durfort". Guy's eldest brother, Jacques Henri de Durfort de Duras, also became a Marshal of France. Their uncle Turenne probably helped to further the careers of both brothers. Guy was one of 12 siblings: Franco-Dutch War In the Franco-Dutch War (1672–1678) Lorges served mostly under Turenne in the French Rhine Army. However, in 1673 he was sent to Flanders with 7000 of Turenne's men to take part in the Siege of Maastricht. He was assigned the north-eastern sector before Wijck, the part of Maastricht that lies on the right bank of the Maas. The town, under the command of Jacques de Fariaux, surrendered on 30 June 1673. Back on the Rhine, Lorges probably participated in the devastation of the Palatinate by