Back in the day, you could look up someone's phone number and address in a book by looking up their last name and first initial. At least, before searching public record delivered to your door was "creepy." Vader would've done it anyway.
SHYWALKER L,
SHYWALLKER M,
SKYWALKER S, (DECEASED)
SKYWALKER L...
AHA! FOUND HIM! OUTER RIM, TATOOINE, LARS HOMESTEAD.
... WHERE'S THE OTHER ONE? IF YOU WERE A MILENNIAL OR BORN BEFORE, YOU'LL GET THE JOKE.