In the 1870 US Census for Franklin, Johnson County, Indiana a George Barnum, 20, Farm laborer, b. Indiana, was enumerated with the family of Jefferson Mitchell.
In the 1880 US Census for Kempton, Tipton County, Indiana the family of George J. Barnum was enumerated as follows:
Dwelling #121; Family #122
Barnum, George; W; M; 30; Single [sic]; Deals in staves; b. Indiana; Birthplaces of both parents unknown
Barnum, Alice; W; F; 27; Wife; Married; Keeping House; b. Indiana; Father b. Pennsylvania; Mother b. Kentucky
Barnum, Bessie; W; F; 2; Daughter; Single; b. Indiana; Both parents b. Indiana
Barnum, Emerson; W; M; 1; Son; Single; b. Indiana; Both parents b. Indiana