Sheridan County, Wy is where you will find what is left of Dietz. My mom was born there in 1908 and several of her siblings. Her name was Evelyn Virginia Cammock. My wife and myself made a trip to Sheridan and had lunch in Sheridan, a beautiful town and then questioned some locals and had a wonderful visit with them, they advised go back north on I-90 to the Acme turnout and then proceed on a hard pack road and keep right, keep right and along the field below the interstate drive south and that takes one to the old cemetery. Watch out for snakes, we saw those; but it was very rewarding traveling around the entire area.
Monarch is in area with an old German-Lutheran Church, and that cemetery is north across the interstate also. But was a wonderful visit and beautiful day. Try it you will love the area.