In the 1850 US Census for Killingworth, Middlesex County, Connecticut the family of Henry P. Barnum was enumerated as follows:
Dwelling #197; Family #226
Henry P. Barnum, 40, M, Real property $750, b. New York
Huldah Barnum, 40, F, b. New York
Anginette E. Barnum, 13, F, Attended school within the year
Mabel R. Barnum, 11, F, Attended school within the year
Henry E. Barnum, 10, M, Attended school within the year
[N.B., His mother and older brother Aaron were living in the same house]