John Russell covered it pretty well in his later response. The entries I found were in "More Forgetten Men" by Schnetzer and "Forgotten Men" by Bartels. Bartels had only the "C.D. Holtzclaw" wounded at Pea Ridge and Schnetzer had all of the Howard County residents as Holsclaws while the Clay County residents were listed as Holtzclaws.
One thing I've wondered about is if any of the Carthage captures (Holzsclaw or the many unlisted) who were released were included in any of the parole exchanges? Or did they break oaths to rejoin the MSG at Lexington? I suspect there was some sort of swap, perhaps for Cole Camp Home Guard captures, but I haven't looked into it. Paroles and such seem not to have been tracked in the first month or two (or the records are lost.) Considering that most of the units were still forming, some were pre-MSG, some MSG, with no CSA representation yet, and on the other side some just mustered Home Guard, some regular army, and some 90 days volunteers...well, the organizational lines weren't established yet.