of spanish and french decent. not be confused with castillo or castille. Unique, intelligent, open-minded. someone who understands life is unending like the human mind. Not afraid to take chances nor face his/herself as a fallible human being who's imperfections teaches him/her a little more about what life is all about. Deeply seeded in spirituality and is more of a global thinker, needing a reference to begin the path of enlightenment or higher education. To say the least, different yet the same. Understands the quote, "know thyself and you shall know the creator".