The name Covil was apparently intended to reflect his grandmother's
maiden name, which has been shown in various sources as Covell,
Covill, and Coville.
In the 1850 US Census for Bridgeport Ward 3, Farifield County, Connecticut the family of Joseph C. Barnum was enumerated as follows:
Dwelling #518; Family #665
Joseph Barnum, 47, M, Blacksmith, Real property $2,000, b. Connecticut
Cynthia Barnum, 44, F, b. Connecticut
George Barnum, 18, M, H. Carpenter, b. Connecticut
Lydia Barnum, 20, F, b. Connecticut
Martha Barnum, 15, F, b. Connecticut, Attended school within the year
Sarah Barnum, 11, F, b. Connecticut, Attended school within the year
Emeline Barnum, 8, F, b. Connecticut, Attended school within the year
John Leeds, 18, M, H. Carpenter, b. Connecticut
[Note: Enumerated in the same dwelling were the families of John Wheaton, 26, H. Carpenter and John Van Buskirk, 34, Carriage maker. Within the latter family were a painter and a saddler. The total number of persons enumerated in the Barnum dwelling was 16].