More about viator
Viator comes straight from Latin viātor “traveler,” formed from the noun via “track, road” and the noun suffix -tor signifying agency. Many occurrences of viātor are on epitaphs on Roman tombs from the “occupant,” asking travelers passing by not to deface the tomb with graffiti, or warning, “Look out! Your turn is coming!” Viātor was also a title of Mercury, the patron and protector of travelers and the escort of the dead to the underworld. A viātor was also an agent employed on official errands for magistrates, other public officers, and professional organizations. Viator entered English in the early 16th century.