I believe that George, his parents and siblings in 1880 were living in Grasshopper, Atchison Co., KS.
John W. Benton, head, b. OH, 37, farmer.
Sarah, wife, b. PA, 29.
Effa J., b. OH, 8.
Geo. A., b. OH, 5.
Charles, b. OH, 2.
Margaret, b. KS, 1/12.
In 1885 the Benton family was living in Liberty, Jackson Co., KS according to the Kansas State Census.
J. W. Benton, head, farmer, 42.
Effie J., 13.
George A., 10.
C. F., son, 7.
Nellie A., 2.
On Sept. 12, 1918 George Benton was living at 2041 Jackson St., Seattle.
Born=1 Sept. 1874.
Occupation=Blacksmith, self-employed, 2041 Jackson St., Seattle.
Nearest Relative=Mrs. Sarah Benton, mother, St. Johns, Stafford Co., KS. Source: World War I Draft Registration Cards 1917-18.
In 1930 George and Grace lived in Seattle.
George Benton, b. OH, 55, marr @ 46, blacksmith shop.
Grace, wife, b. OH, 49, marr @ 40.
A George Benton, 68, died 6 July 1943, Seattle per death cert #3361. Source: Washington Death Index 1940-96.
You can contact the Washington State Library, sos.wa.gov/library/obituaries.aspx for his obituary, however, they're quoting a three to four-week wait time.
You can contact the Seattle Genealogical Society, rootsweb.ancestry.com/~waseags/ who looks up obituaries. Successful Searching!