You may have tracked this down years ago, but if not…
14 Oct 1876: Ohio Births and Christenings Index listing for Isaac Newton Covault, father Isaac Newton Covault, mother Elvira E. Wiles.
http://search.ancestry.com/cgi-bin/sse.dll?db=fsohiobirth&am...1880: Census Place: Greene, Shelby, Ohio; Roll: 1066; Family History Film: 1255066; Page: 122D; Enumeration District: 211; Image: 0347
Places him with his mother and her parents, David S. Wiles and Catharine, in Green, Shelby Ohio. His mother is ‘single’ and listed under her maiden name. He is listed as ‘grandson’ with name Newton Covault.
http://search.ancestry.com/cgi-bin/sse.dll?db=1880usfedcen&a...1901: Marriage to Elizabeth Ford Bennett.
https://familysearch.org/pal:/MM9.1.1/XDWY-29L , also
The Lima News (Lima, Ohio), 8 Oct 1901, Page 8, as found at Newspapers.com
1901: Treasurer for the Toledo, Columbus, Springfield and Cincinnati Railway Company.
The Lima News (Lima, Ohio), 12 Aug 1901, Page 10, as found at Newspapers.com
1902: Secretary for the South Lima Savings Bank and Trust Company.
The Lima News (Lima, Ohio), 22 Feb 1902, Page 3 as found at Newspapers.com
1903-1911: Toledo, Ohio City Directory listings over several years identify him as secretary, assistant manager, bookkeeper, and travel agent.
17 Apr 1904: Birth of son Harry Covault. "Ohio, County Births, 1841-2003," index and images, FamilySearch (
https://familysearch.org/pal:/MM9.1.1/X6LN-TRR : accessed 08 Oct 2014), Elizabeth Bennet in entry for Harry Cavauld, 17 Apr 1904; citing 43, Toledo, Lucas, Ohio; FHL microfilm 909021.
Address matches address in City Directory listings.
1910: Census Place: Toledo Ward 3, Lucas, Ohio; Roll: T624_1208; Page: 11B; Enumeration District: 0053; FHL microfilm: 1375221
Record for Isaac N Covault
5 Oct 1915: Re-marriage of Elizabeth Ford Bennett to Thomas Bell McMillan. She is listed as having been previously married to Isaac Newton Covault.
"Ohio, County Marriages, 1789-1997," index and images, FamilySearch (
https://familysearch.org/pal:/MM9.1.1/XZH2-461: accessed 08 Oct 2014), Thomas B. Mcmillan and Elizabeth Ford Bennett, 05 Oct 1915; citing Lucas, Ohio, United States, reference p402, #24548; FHL microfilm 2132745.
1916: Death in Wellston, Jackson, Ohio.
http://search.ancestry.com/cgi-bin/sse.dll?db=ohobit&h=2...Burial in Fletcher, Miami, Ohio
I can find no marriage record and given the 1880 census listing it seems he was born out of wedlock. I think the most likely ID of the father is Isaac Newton Covault (1853-1933) born in Green, Shelby, Ohio and moved to Poweshiek County, Iowa in 1876 where he married Catherine Florence Jones. There is, however, no mention (e.g. in his obit) of the elder I. N. Covault leaving behind an illegitimate son when he moved to Iowa.
I have a photo in an album belonging to my great-grandfather Freeman Jones (brother of Catherine), taken by G. S. Elwell of Toledo, Ohio, which I think is likely to be of Elizabeth Ford Bennett (I can find no other likely candidates in my family). I've been trying to put a name to the face - hence my research.
I have attached the photo and newspaper clippings noted above to Elizabeth Ford Bennett in my family tree on Ancestry (The Raintree County Atlas) at
http://trees.ancestry.com.au/tree/73831579/person/4828329711...Regards