Johnny Behan

From Memory Alpha, the free Star Trek reference.

Johnny Behan was a 19th century Human law officer. He was the sheriff of Tombstone, Arizona at the time of the shootout at the OK Corral on October 26th, 1881. Behan was a friend of Ike Clanton and promised him amnesty in case he killed the Earps.

In 2268, Behan was part of a bizarre recreation of the duel created by the Melkot to execute Captain James T. Kirk and his landing party. (TOS: "Spectre of the Gun")

Johnny Behan was played by actor Bill Zuckert.