Hi Edwin, I first find George in 1920 living in Turns, Merced Co., CA. George W. Hann, b. NJ, 46, general farmer. Mary P., wife, b. IA, 32. Catherine A., b. CA, 1 3/12ths.
In 1930 George and family were living in Jackson, Amador Co., CA. George W. Hann, b. NJ, 56, marr @ 44, postal clerk Jackson P. O. Mary P., wife, b. IA, 42, Marr @ 30. Catherine A., b. CA, 11. George W., b. CA, 9. Jonas L., b. CA, 5.
George W. Hann b. 16 April 1873, New Jersey died 16 Oct 1961, Stanislaus County, CA. Source: California Death Index 1940-97.
I'm not SURE this is your George or not since the death year doesn't match nor does the county. Hopefully you have additional info that you can verify this against. Successful Searching!