In the 1850 US Census for Franklin, Lenawee County, Michigan the family of Zar Barnum was enumerated as follows:
Dwelling #621; Family #621
Zar Barnum, 47, M, Farmer, Real property $1,000, b. New York
Margarett Barnum, 47, F, b. New York
William Barnum, 24, M, Farmer, b. New York
Stephen Barnum, 21, M, Farmer, b. New York, Attended school within the year
Betsy Ann Barnum, 19, F, b. New York, Attended school within the year
Urban Barnum, 18, M, b. New York, Attended school within the year
Oliver Barnum, 17, M, b. New York, Attended school within the year
Andrew Barnum, 14, M, b. New York, Attended school within the year
John Barnum, 12, M, b. New York, Attended school within the year