I run across these types of grave markers a lot in the southeastern Wisconsin area. Most of them are almost impossible to read after the wear and tear of the weather. This particular one is hard to read even without the spooky lighting that my camera captured. I’ve rarely seem markers like this that were readable, but I have seen them. They usually just list the persons name and year of birth and death. I’m assuming that these may be the “default” markers that are given to people that couldn’t afford a full headstone or were without family.