Paula,

The SGGEE databases http://www.sggee.org show 30 Streicher, all in the Gostynin region though none specifically in Luisenthal.

Many places in Poland had Germanic names even when Germany was not in control of the territory. Luisenthal (note spelling) is today known as Ludwikowo and is located a few km ENE of Gostynin, just off the road to Plock. This would have been in Gostynin Parish, Plock Diocese so the references to either are understandable.

Jerry Frank