"Landgrave Ernest of Hesse-Rheinfels-Rotenburg (8 December 1623 – 2 May 1693) was from 1649 to 1658 Landgrave of Hesse-Rheinfels and from 1658 until his death Landgrave ...
of Hesse-Rheinfels-Rotenburg. Because his brothers died young, all later Landgraves in the Rotenburg Quarter are descendants of Ernest. Hence, Ernest is known as the ancestor of the Catholic Rotenburg Quarter, a group of junior lines of the House of Hesse." - (en.wikipedia.org 07.02.2021)
