After the ascension of Frederick William (reigned 1713-1740) he became the leading politician in Prussia (Oberpräsident of the Privy Council and de facto Prime Minister of Brandenburg). He was finally sacked in 1713 (Peace of Ryswick): his downfall was caused by his stern Calvinism contrasted with pomp of Frederick III's court, and he was disliked by Electress Sophia Charlotte. Frederick also blamed Danckelman for opposing his goal of acquiring a royal title.