Hans Weber (married to Anna Eilers — brother-in-law to Karl Eilers) sent this written history of the family from notes he had to Karl Eilers in 1927.

Names mentioned: Emma Preu, Emma Karoline Franziska Eilers, Karl Eilers of Ilsenburg, Anna Varges, Anna Tsschnur, Luise Anna Eilers, Friedrich Louis Eilers, Bertha Luders, Friedrich Ernst, Else Fritsch, Karl-Ernst Eilers, Siegfried Eilers, Gunther Eilers, Volkmar Eilers, Rosemarie Eilers, Luise Brandes, Bergrat Brandes (Bergrat Friedrich Brandes).

Regarding Brandes: J. Bergrath ‘Hermann’ Brandes was married to Anton’s half-sister Luise Eilers Brandes. Luise was the youngest of Anton’s four half-siblings. In the biography of Ernst “Fritz” Eilers, author unknown, Brandes was initially referred to as Hermann Brandes, but that was crossed out on the document in favor of J. Friederich Brandes. In Else Eilers’ compilation of history, she called him Bergrath Brandes. Below, Hans Weber called him Bergrat Friedrich Brandes. I have used Hermann herein simply because it is easiest to pronounce.