A wayfarer is a traveler, especially one who travels on foot. You might run into a wayfarer on a hiking trail, midway on his journey from Georgia to Maine.
Sometimes the word wayfarer is used to describe someone who doesn't simply go on a hike, but who always seems to be restless, especially a journeying literary character. One of the most well-known, classic brands of sunglasses is the Ray-Ban Wayfarer, in production since the early 1950s. Wayfarer combines way with farer, from an Old English root, fær, "journey, road, passage, or expedition."