They divorced about 1920 or were not living together at that time.
The family can be found in the 1900-1930 census, but the surname is poorly transcribed.
He is hard to find in the 1920 census. ED 34, dwelling 168. "Mrna, Esy" or something like that. Incorrectly indexed in Ancestry as Bertha Muma
1930 United States Federal Census
Name: Eri Muma
Home in 1930: Arcadia, Lapeer, Michigan
Age: 63
Estimated Birth Year: abt 1867
Birthplace: Michigan