According to Ed Shames Hughes was from a well off NY family, p160 https://books.google.com.au/books?id=sYGXCwAAQBAJ&pg=PA177&...
Shames believed Hughes was a grandson of Charles Evans Hughes, 11th Chief Justice of the US
However the Justice has no grandson's named Richard on Geni, nor mentioned on wikipedia so Shames must have been mistaken.
I found an enlistment for a Richard H Hughes Jr from NY who might be our man: https://aad.archives.gov/aad/record-detail.jsp?dt=893&mtch=13&a...
I also found some census records and started a small tree: Richard Hayden Hughes
