In the 1850 US Census for Harrison, Weschester County, New York the family of George W. Barnum was enumerated With the family of Henry Seymour, as follows:
Dwelling #524; Family #29
Henry Seymour, 66, M, B, Laborer, Real property $800, b. America
Catharine Seymour, 60, F, B, Laborer, b. America
Heuna Platt, 41, F, B, Laborer, b. America
Sarah I. Barnum, 17, F, B, Laborer, b. America
Frances E. Barnum, 4/12, F, B, Laborer, b. America
George W. Barnum, 20, M, B, Laborer, b. America