 Henry XIII joined the Confederation of the Rhine in 1807 and later was a member of the German Confederation.At the Congress of Vienna he was involved in a territorial dispute with the Kingdom of Saxony, from which emerged victorious and won the domain of the cities of Altgommla and Kühdorf.Heinrich XIII married on 9 January 1786 in Kirchheimbolanden to Princess Wilhelmine Louise of Nassau-Weilburg (1765–1837), fourth child and second daughter of Charles Christian, Prince of Nassau-Weilburg, and his wife, Princess Carolina of Orange-Nassau.