In the 1850 US Census for Gibson, Susquehanna County, Pennsylvania the family of Chanucey Barnum was enumerated as follows:
Dwelling #93; Family # 94
Chauncey Barnum, 46, M, Farmer, Real property $2,000, b. New York
Leafy Barnum, 47, F, b. Vermont
Harrison Barnum, 17, M, Farmer, b. Pennsylvania, Attended school within the year
Rufus Barnum, 9, M, b. Pennsylvania, Attended school within the year
John Barnum, 7, M, b. Pennsylvania, Attended school within the year