I saw the Census record for Ray Beach, which included "Ollover Werths" and Nannie Werths. When I searched using that spelling, I didn't have much luck, but I did find a few people by the name of "Oliver Wertz" that were born in Indiana around the right time. Since Nannie is probably a nickname, I didn't look for that name.
Just in case you might want to check them out, here are the links on Family Seach (these records are also on Ancestry):
William Wertz WWI Draft Card (nearest relative in IN, living in MI):https://familysearch.org/pal:/MM9.1.1/K6X7-2YQ