Looks like they weren't brothers after all, as Heinrich was the jungest of three siblings, the other two were his sister Gisela and brother Gisbert ( source:
http://de.wikipedia.org/wiki/Heinric..._von_Einsiedel ).
Although I have little knowledge of the workings of nobility and hereditary titles, it would strike me as illogical that two
Graefen Von Einsiedel would
not be related.
But I have been wrong once in this matter, so I won't press my case again!!!
Here are some famous Einsiedels, perhaps our subject was related to one of the latter ones:
http://de.wikipedia.org/wiki/Einsiedel_(Adelsgeschlecht)
