John I do not find a Hardwick. However the ladies who transfered the marriage index from hand writing to type might made errored-Hardwick for Hardway. I find an Elizabeth S. Hardway 17 married Alfred E. Pace, by John R. Granott,JP 5 May 1851 Bk 1 P 166 in Sevier County Ark. Also I have a James Hardway 23 married Rochel P. Williams 23 by G.W. Powell on 19 July 1883 Bk 4 P 306 in Sevier County Arkansas.
Copies of marriage license can be obtained from Sevier County Clerks Office in DeQueen, Arkanas. I believe the copy only is $1.00 and certified copy is $10.00/ea with a self addressed envelope. Hope this helps a little. Faye