Mlrf25

I'm having difficulties finding information about an artist. M.Sibulz or M.Sibutz. I've scattered the web and cannot find any information.

My grandparents have a large oil painting of what looks to be a game warden/game keeper catching a poacher coming around the corner of a mountain pass. The poacher looks cornered as he has a dead goat or sheep. The warden has a rifle and a dog. In a recent conversation with my grandfather he believes the game warden is German...my family has german/austrian and swiss ancestory. I believe my grandfather picked the painting up in the late 1930's from an estate sale in or around central Ontario Canada. I've loved this painting for as long as I can remember, because you can feel the tension and the question marks surrounding what's about to happen next.

Any help would be appreciated.