Barthold Nihus
From GATE
Barthold Nihus (7th February 1590, Holtorf, Hanover-10th March 1657, Erfurt) was a Chatolic convert, a German Catholic bishop and controvertialist.
On April 10 1655, Kircher wrote to Berthold Nihus to acquaint him with the election of the new pope, Alexander VII.
Further information on this site.