Werthern wrote to Count Holnstein, without consulting Bismarck, mentioning the possibility of a financial contribution to the Bavarian King if he supported the founding of the empire.
From mid-November 1870, Werthern and Holnstein played a key role in pushing forward the idea of Ludwig II proclaiming himself emperor, bypassing the Bavarian Foreign Minister von Bray.
At his ceremonial farewell in Munich in 1888, Luitpold, Prince Regent of Bavaria awarded him the Grand Cross with Diamonds of the Order of Merit of the Bavarian Crown.
[1] On 1 October 1863, Count Werthern was married to Gertrud Sophie Auguste Adolphine von Bülow (1841–1919) at Beichlingen Castle.
[1] Through his youngest son Georg Heinrich, he was a grandfather of Baron Ottobald Christian-Ernst von Werthern-Beichlingen and Baroness Gertrude von Werthern-Beichlingen (1913–1987), who married Prince Hermann Otto of Solms-Hohensolms-Lich (parents of Hermann Otto Solms) and, after his death in 1940, Hans Joachim Sell of Neustettin in 1950.