Landscape with a stream, help identify the author
 

Please help everyone who is on this forum.
Help identify the author of the picture.
This is a landscape with a brook.
In the lower left corner, under the roots of a tree signed.
Unclear signature - green and green on a brown background.
The first letter W then illegible and ends: ivarz.

KMK, signed W.Schwarz.

Painting by lover whom a great many.