Have you ever considered the possibility that your ancestor's census enumeration may have his first and last name switched? The 1930 census entry for my wife's step-great-grandfather, Panagiotis Verikios in Chicago does.
The image on the right shows the enumeration and the pattern here was for the last name to be first and the first name to be last--except for Panagiotis.
You can search the 1930
census for your own ancestor as well and if you don't find him, consider switching the first and last names.