Marion Turner was a Lincoln County (NM) deputy and a gunman for the Murphy-Dolan faction. When the Battle of Lincoln broke out in July 1878, Turner tried to deliver warrant to the Regulators holed up in the Alexander McSween house; he retreated when the inhabitants threatened him.
But as the standoff ended, Turner allegedly was one of the men who killed an unarmed McSween. He and compatriot John Johns were indicted in the case but was given amnesty. Several years later, Turner struck it rich in the silver mines.