circuit rider

(formerly) a minister who rode horseback from place to place to preach and perform religious ceremonies.

someone, as a public official or a nurse, who travels throughout a given territory to provide services.

Origin of circuit rider

An Americanism dating back to 1830–40

Had not the circuit-rider said in his last sermon that not even a sparrow falls to the ground unmarked of God?

The Young Mountaineers |Charles Egbert Craddock
These notions of young Felix Kendrick were confirmed and enlarged by his marriage to the daughter of a Methodist circuit-rider.

Mingo |Joel Chandler Harris
Marthy, the circuit-rider'll be 'roun' two weeks from next Sunday.

In Happy Valley |John Fox
The circuit-rider, whether Methodist or Baptist, found here a field ripe for his harvest.

Our Southern Highlanders |Horace Kephart

Say you were a circuit-rider—that's more near the literal truth.

Romance of California Life |John Habberton

circuit rider

US and Canadian (formerly) a minister of religion who preached from place to place along an established circuit