Some sources give her surname as Truman and her given names have also been reported as both Anna Marie and Mariah.
In the 1850 US Census for Township 9 North, Range 1 East, Knox County, Illinois the family of Anna Maria (Trueman) Barnum was enumerated as follows:
Dwelling #815; Family #830
Martha Truman, 55, F, Real property $300, b. New York
George C. Spencer, 39, M, Farmer, Real property $300, b. Pennsylvania
Mariah Barnum, 37, F, b. Pennsylvania
John Barnum, 15, M, b. Canada, Attended school within the year
Henry Barnum, 9, M, b. Michigan, Attended school within the year
In the 1860 US Census for Salt Lake City, Salt Lake County, Utah Territory the family of Anna Maria (Trueman) Barnum was enumerated as follows:
Dwelling #1874; Family #259
Maria Barnum, 48, F, Real property $150; Personal property $250; b. Pennsylvania
John Barnum, 25, M, Farmer, b. Canada
Esther Barnum, 25, F, b. Michigan
Henry Barnum, 19, M, Farm laborer, b. Michigan