What was the sheriff's name on the rifleman?

The sheriff on "The Rifleman" was named Lucas McCain, portrayed by Chuck Connors. However, the character often interacted with Sheriff Micah Torrance, played by Paul Fix, who was a recurring character throughout the series. Lucas McCain is a widowed rancher and a skilled sharpshooter, while Sheriff Torrance served as the lawman in the town of North Fork, New Mexico.