Friedrich Wilhelm Quirin von Forcade de Biaix, baptized Quirin Frideric de Forcade, aka Friedrich Quirin von Forcade, aka Frédéric Quérin de Forcade, was a Royal Prussian Lieutenant General, the second son of Jean de Forcade de Biaix, an early Huguenot immigrant to Brandenburg-Prussia and a descendant of the noble family of Forcade. He was one of Frederick the Great's most active and most treasured officers. He was wounded three times and once left for dead on the battlefield. Together with his wife, he fathered 23 children.

Jean de Forcade de Biaix, aka Jean de Forcade, Marquis de Biaix, aka Jean-Quirin de Forcade de Biaix, aka Jean Quérin von Forcade, Herr von Biaix, aka Johann Querin de Forcade, Herr zu Biaix, aka Johann Quirin von Forkade de Biaix, was a Huguenot, a descendant of the noble family of Forcade and Lieutenant General in the service of the Kingdom of Prussia. He was the Regimentschef of the 23rd Prussian Infantry Regiment, Commandant of the Royal Residence in Berlin, Gouverneur militaire of Berlin, a Knight of the Order of the Black Eagle a member of King Frederick I of Prussia's "Tobacco Collegium". and president of the Grand Directoire 1718–1729, the deliberative and decision-making body responsible for all Huguenot affairs in the kingdom.