Mine is multi layered, the most obivious one is a tip of the hat to my favorite book by J.R.R. Tolkien, "The Hobbit" and the lead character ,with whom I have a lot in common . Second, "Bilbo" is a loving nickname the Basques have given to "Bilbao" , capital city the province of Bizkaia \ Vizcaya, and the birth place of my mother and her family. (There's also a nickname in Euskara \ Basque for Bilbao.."el boxto " which translates into "the hole" another hobbity type reference.) The second part, "The Rover" is a reference to one of my favorite Zeppelin songs as well as a reference to myself being a bit of a traveler. And there it is......