George was last known to have resided in Acampo, California.

1880 US Census: Cleveland, Cuyahoga, Ohio
Henry K. CUSHING1 Self M Male W 52 MA Physician MA MA
Bessie M. CUSHING2 Wife M Female W 52 NY Keeping House CT OH
William E. CUSHING3 Son S Male W 26 OH Lawyer MA NY
Alice K. CUSHING4 Dau S Female W 21 OH At Home MA NY
Henry CUSHING5 Son S Male W 19 OH At College MA NY
Eden S. CUSHING6 Son S Male W 17 OH At College MA NY
Geo. B. CUSHING7 Son S Male W 16 OH At Farm School MA NY
Allyne M. CUSHING8 Son S Male W 12 OH At School MA NY
Harvey W. CUSHING9 Son S Male W 11 OH At School MA NY

1880 US Census: Hudson, Summit, Ohio
A.D. CRON Self M Male W 31 OH Farmer OH OH
Cornelia M. CRON Wife M Female W 28 OH Keeping House IRE CT
Jessie M. CRON Dau S Female W 6 OH At School OH OH
Howard R. CRON Son S Male W 3 OH OH OH
David CRON Uncle W Male W 61 OH Laborer PA OH
Ellen KELLEY Other S Female W 21 CANADA Servant IRE IRE
George B. CUSHING Other Male W 16 OH Laborer MA NY

1900 US Census: San Francisco, San Francisco, California
Name: George B Cushing
Home in 1900: San Francisco, San Francisco, California
Age: 36
Birth Date: Apr 1864
Birthplace: Ohio
Race: White
Ethnicity: American
Relationship to head-of-house: Lodger
Father's Birthplace: Massachusetts
Mother's Birthplace: New York
Marital Status: Single
Residence : San Francisco City, San Francisco, California
George B Cushing San Francisco, San Francisco, California Apr 1864 Ohio White Lodger

Sources:
1. The Genealogy of the Cushing Family (An account of the Ancestors and Descendants of Matthew Cushing, who came to America in 1638) by James Cushing, The Perrault Printing Co - Montreal, 1905. First Edition, 1877, by Lemuel Cushing, D1881 (Finished by his family) Pg 507
2. 1880 US Census: Cleveland, Cuyahoga, Ohio
3. 1880 US Census: Hudson, Summit, Ohio
4. 1900 US Census: San Francisco, San Francisco, California
5. FamilySearch: International Genealogical Index v5.0