According to the 1860 Census Robert Daniels, age 5, born Virginia was living in the household of William and Martha Daniels.
Robert Daniels was age 12, born Ohio in the household of William Daniels in the 1870 census for Wayne County, West Virginia. The birthplace, Ohio, is probably incorrect since he is shown as born in Virginia in both the 1860 and 1880 census.
1880 Census Wayne Co., WV, Robert, age 24 born Virginia, was living with his mother, Martha Daniels at Ceredo. His occupation was shown as "works on farm". 
He is not found after 1880 in any records.
↑ "United States Census, 1860, Wayne Co., VA, P.O. Round Bottom, p 36, # 257, Robert Daniels in entry for William Daniels", (https://familysearch.org/ark:/61903/1:1:M411-7Z6), The U.S. National Archives and Records Administration (NARA). Publication Number M653 Film Number 1383. GS Film Number 805383 Digital Folder; Number 005171752; Image Number 00402.
↑ "United States Census 1870, Wayne County, West Virginia, P.O. Ceredo, p 21, #146/146. Household of William Daniels. Robert Daniels, age 12, farmhand, born Ohio.," (https://familysearch.org/pal:/MM9.1.1/MZHM-T8M), NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 553,200.
↑ "United States Census, 1880," (https://familysearch.org/ark:/61903/1:1:M6TC-ZNY), Robert Daniels in household of Martha Daniels, Ceredo, Wayne, West Virginia, United States; citing enumeration district ED 144, sheet 320C, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 1415; FHL microfilm 1,255,415.
It may be possible to confirm family relationships with Robert by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Robert: