Complex sentence: His first name was never revealed in the series; according to series creator Sherwood Schwartz it was actually "Willy" Gilligan, which would have been used had this ever been deemed necessary to the story.
Split into simpler sentences: His first name was never revealed in the series. According to series creator Sherwood Schwartz it was actually "Willy" Gilligan, which would have been used had this ever been deemed necessary to the story.