Fürst Hans Heinrich XI von Hochberg (1833-1907) was the prussian court Jägermeister between 1872 and 1891

here in uniform

this was not some job giving honorary but he had a great knowledge about all aspects of hunting. Fürst Pless was working as some kind of first hunter in state and in this position he had an big influence.
to bring the old horn back into common use was his merit. in the 1870s the hunting horn had the last refuge in the military Jaeger units were it survive from the 18. century.
he preferred the Berger needle fire double gun action in a way this gun was called "Fürst Pless gun" and because of his position this action became fashionable. notice that this typ of hunting gun is rare if compared with Dreyse but its common to see best grade guns after 1870 with name's from Berlin because of the Pless example.

Pless castle in Silesia is a museum today , nice website http://www.zamek-pszczyna.pl/wz/en/index.html

you can visit it online