In the 1850 US Census for Eldred, McKean County, Pennsylvania the family of Josiah C. Barnum was enumerated as follows:
Dwelling #563; Family #563
Josiah C. Barnum, 44, M, Farmer, b. Massachusetts
Phebe Barnum, 35, F, b. New York
Henry Barnum, 15, M, Laborer, b. Pennsylvania, Attended school within the year
Francis Barnum, 12, M, b. Pennsylvania, Attended school within the year
Dwight Barnum, 9, M, b. Pennsylvania, Attended school within the year
Martha Barnum, 4, F, b. Pennsylvania, Attended school within the year
Martha Barnum, 34, F, b. Massachusetts
Thomas Barnum, 39, M, Laborer, b. Massachusetts
Josiah Barnum, 70, M, No occupation, b. Massachusetts