A "new" feature on Ancestry is found at the Link below.

I typed in HAUSE and using the AA Filter these results were for ALL enumerated as AA with that spelling in the Federal Census from 1850-1930.

Search Results
532 1920 United States Federal Census
430 1910 United States Federal Census
171 1900 United States Federal Census
160 1930 United States Federal Census
94 1870 United States Federal Census
54 1880 United States Federal Census
4 1850 United States Federal Census
2 U.S. Federal Census Mortality Schedules, 1850-1880
1 1860 United States Federal Census

In Your case here are the results for North Carolina
Search Results
32 1910 United States Federal Census
28 1920 United States Federal Census
24 1870 United States Federal Census
20 1930 United States Federal Census
18 1900 United States Federal Census
2 1880 United States Federal Census
1 1860 United States Federal Census

Hope this helps in determining the race/ethnicity, occupation and possible ownership of a grist mill by your ancestor.

Art