In 1744, Charles was engaged to marry Maria Amalia of Hesse-Cassel (1721–1744), but she died before they could wed. Upon his death in 1762, lacking legitimate heirs, his estate reverted to the crown. After the Treaty of Hubertusburg, Frederick II granted these fortunes to the two officers for whom he had particular gratitude: Hans Sigismund von Lestwitz received the estate of Friedland, and Joachim Bernhard von Prittwitz, who had led the king from the battlefield in the Kunersdorf, received the estate at Quillitz. Theodore Fontane gave this circumstance a special mention, by quoting a proverb: "Lestwitz a sauvé l'etat, Prittwitz a sauvé le roi." (Lestwitz saved the state, Prittwitz the king.) The staff officers of the Lestwitz regiment received a golden medal.