While traveling in Missouri I saw the name Mulkey in a cemetery I was passing. This cemetery is located off County Road H between I-40 and Monett, MO. When H turns and goes west at Freistadt continue south to the first four way stop where the church is located. The cemetery is on the south side of the church. All of these tombstones can be located in this cemetery.
I believe William H. Mulkey was born in Georgia and later moved to Arkansas before moving to Missouri. (Arkansas Census-1860 page 384)