Delancy Hurd Barnum was enumerated twice (on separate dates) in the 1850 US Census for Michigan, as follows:
Lodi, Washtenaw, Michigan
Dwelling #162; Family #162
J. D. Southwell, 65, M, Farmer, Real property $800, Place of birth not known
Mahetible Southwell, 60, F, b. New york
Mary Southwell, 16, F, b. Michigan
Delancy Barnum, 7, M, b. Michigan, Attended school within the census year
[Note: The Southwells were Delancy's maternal grandparents].
Grass Lake, Jackson, Michigan
Dwelling #52; Family #54
Solom [sic] Burlingame, 34, M, laborer, b. Vermont
Martha Burlingame, 36, F, b. New York
Eliza A. Burlingame, 11, F, b. New York
Delancy H. Burlingame, 6, M, b. New York
Lydia Burlingame, 5, F, b. New York
Oscar Burlingame, 1, M, b. New york
Skelon Spear, 22, M, Laborer, b. New York
[Note: Martha and Solom were Delancy's mother and stepfather].
The website Hopkins: Rhode Island to Michigan gives the following information: Harriet HOPKINS b: Jul 1846 in MI d: Jul 11, 1936 in Flint, Genesee Co, MI m. Delancey BARNUM b: abt. 1842 in NY d: bet. Jun 11, 1880 - Jun 02, 1900 in MI m: 1863 in MI. Occ: 1880 Farmer. Son Edward BARNUM b: 1864 in MI. Occ: 1910 Engineer marine, 1920 Marine Engineer onboard boat m. Emma UNKNOWN b: abt. 1876 in OH m: abt. 1903. Dau. Nettie B BARNUM b: Apr 1871 in MI m. Edward A RUNYAN b: Aug 1862 in MI d: May 04, 1937 in Flint, Genesee Co, MI m: abt. 1892 in MI. Occ: 1900 Physician, 1910 Physician & Surgeon, 1920-1930 Physician medicine general practice.
The given name engraved on his gravestone is "Delanca". No reason has been discovered for the difference in spelling.