Principality of Brunswick-Wolfenbüttel
In 1700 he was envoy extraordinary to the Principality of Brunswick-Wolfenbüttel, were in 1701 he was replaced by uncle François d'Usson de Bonrepaus and went to the Court of Stockholm. From 1707 to 1710 he was representative at the court of Stanisław Leszczyński. In May 1711 he replaced Jean-Denis de Blécourt at El Escorial where he was till 1713 as envoy extraordinary.