 Brunswick, Hanover, Oldenburg, Saxony, Baden), some became Reformed (Bentheim, Bremen, Lippe), while others remained Catholic (e.g.Bavaria and areas along the Rhine).Some states saw unions of Reformed and Lutherans to a united confession, such as Anhalt (1820 in Anhalt-Bernburg, 1827 in Anhalt-Dessau, and 1880 in Anhalt-Köthen), Baden (1821), Nassau (1817) and the Bavarian Palatinate (1848), while Prussia introduced an administrative-only Union of Lutheran and Reformed churches in 1817, followed by the also administrative-only Hanau Union of churches in Hesse-Cassel (1818) and a united administration for Lutheran, Reformed and Protestant union congregations in Hesse-Darmstadt (1832) and in Bremen (1877).