Bobby Garfield (first appeared in Hearts in Atlantis)

Bobby Garfield is mentioned in the following books:

The Dark Tower VII: The Dark Tower (Sep 2004)

When Ted first sees Jake, he mistakes him for Bobby Garfield - evidence for the theory that Jake and Bobby are twinners.

“Bobby?” he said in a voice that was not much more than a whisper. “My God, is it Bobby Garfield?”
- Part 2 / Chapter IV / Section 3