Jmmumbauer
At the time my US subscription to ancestry.com is not paid, but I did a search anyway. Oliver Mumbauer is on the 1920 US Federal Census in Erie County, NY.
Name: Oliver Mumbower
Spouse: Mary Mumbower
Birth: abt 1856 - Pennsylvania
Residence: 1920 - city, Erie, New York
1880 Oliver F. & Mary A.
1860 Montgomery County Pennsylvania Oliver Mumbauer
Name: Oliver Wlaimbauer
[Oliver Mumbauer]
Spouse: Mary Marmbauer
Birth: abt 1855 - Pennsylvania
Residence: 1910 - city, Erie, New York