The character name Ambrose Chapel actually comes originally from the Alfred Hitchcock movie "The Man Who Knew Too Much", which is where the X-Files writers took it from.
The Character name of 'Ambrose Chapel' is taken directly from an episode of The X Files. CIA Agent Ambrose Chapel (Played by Tom Butler) first appears in Season 2 Episode 16 'Colony' This episode is also the first to feature Alien Bounty Hunter.