When the war ended he stayed in the army as garrison commander at Emden. In 1766 Courbière married Sophie von Weiss. The couple, married until her death in 1809, had nine children. Among the laters' private teachers was Johann Gottfried Seume. Courbière was a known duellist, fighting at least two duels during his time in Emden. Among Courbière's descendants was René de l'Homme de Courbière, who served as Generalleutnant in the Wehrmacht during World War II. Wilhelm René de l'Homme de Courbière was made a Generalmajor in 1780 and was a Generalleutnant when the French Revolutionary Wars began. In those he led formations at Verdun and Pirmasens, receiving the Order of the Red Eagle for the later. Then he became a corps commander and in 1798 he was promoted to General der Infanterie. In 1802 he was bestowed with the knighthood of the Order of the Black Eagle.