First king of Prussia, third elector of Brandenburg, and son of the Great Elector Frederick-William, whom as elector he succeeded in 1688; he extended his territory by purchase; supported William of Orange in his English expedition, and lent assistance to the Grand Alliance against France, for which he received the title of king of Prussia, being crowned such in Königsberg in 1701; he was "an expensive Herr, and much given to magnificent ceremonies, etiquettes, and solemnities" (1657-1713).