A person could have an Evart mailing address and live in Mecosta County. I'd check records for both counties. Birth, Marriage and Death Records for early years are available on microfilm through LDS (Mormon) Family History Centers.
I know of the following Simons in Evart. Iden Elmer Simons b. 4-9-1853 d. 8-21-1939. Iden's wife was Laura Jane Cox. His father was "E. Simons who died at the home of his daughter, Mrs. S. E. Martin of Reed City, Oct. 24th (1900).Age 87 years 6 months." Both of these men lived in Evart for a time, but I have found no more information. Have you tried the 1900 census? Elna