pathfinder (n.)

"one who discovers a way, an explorer or pioneer," 1839 (Cooper), from path + finder.

"Pathfinder!"

"So they call me, young woman, and many a great lord has got a title that he did not half so well merit; though, if truth be said, I rather pride myself in finding my way where there is no path, than in finding it where there is. But the regular troops are by no means particular, and half the time they don't know the difference between a trail and a path, though one is a matter for the eye, while the other is little more than scent."

[Cooper, "The Pathfinder"]