According to the DAR service record of Benjamin Hider (Hyder) his son John Wallis Hyder and Lucy Mullins did have a son John Wallis Hyder Jr.
However as you provided no time frame or location, it may or may not be whomever you are looking for?
North Carolina, Marriages
Groom John Wallis Hyder
Bride Lucy Mullins
marriage 29 Mar 1811 Rutherford, NC
HIDER, BENJAMIN Ancestor #: A055088
Service: NORTH CAROLINA Rank: PATRIOTIC SERVICE
Death: 12-16-1826 RUTHERFORD CO NORTH CAROLINA
Service Source: NC REV ARMY ACCTS, VOL# V, P 35, FOLIO 4, #577, ROLL #S.115.57.2
Service Description: 1) RECEIVED CERTIFICATE FOR SERVICES RENDERED
SPOUSE: CATHRINE HELSEP
John Wallis Hyder was the child of John Wallace Hyder Sr born on 10 - Mar - 1786 at Rutherford Co NC died at Rutherford Co NC on - - 1853 and his ( 1st ) wife Lucy Mullins born on - - 1795 at Rutherford Co NC died at Rutherford Co NC on - - 1860 married on 29 - Mar - 1811married at Rutherford Co NC .
The Said John Wallace Hyder was the child of Benjamin Hider born on 16 - Oct - 1745 at _______________ died at Rutherford Co NC on 16 - Dec - 1826 and his ( 1st ) wife Catherine Heslep born on 10 - Nov - 1747 at Rutherford Co NC died at Rutherford Co NC on - - 1830 married on - -