Landgraviate of Hesse-Darmstadt
As the two lines argued over the details of the division, Maurice, Landgrave of Hesse-Kassel annexed the whole territory and introduced Calvinism. After a long dispute and armed conflict, Maurice — who had enemies at home as well — resigned in 1627 and left his part of the territory to the Landgraviate of Hesse-Darmstadt.