 Only during the time of Calvin (1509–1564) himself did genuinely Calvinist influences enter the German Reformed faith; even today, it remains more Philippist than Calvinist.In the German Empire (1871–1918) some states were Lutheran, some Reformed.King Frederick William III of Prussia united both major Protestant confessions in his domains into the Prussian Union of churches in 1817, allowing congregations to maintain Lutheran or Reformed confession, or declare their union, also in Bremen (1877), Hesse-Cassel (1817), and Hesse-Darmstadt (1832) Reformed and Lutherans form a union merely in administration.