He really only came through a doorway of death one time. The second time he came into Mid-World, he didn't die to do it. Also, I would not capitalize billy bumbler. There is no Edit on this one for me to help.*Jake Chambers, the boy who has come twice through the doorway of death into Roland's world; and Oy, the Billy-Bumbler.
I am sure Daggers will catch those and fix them herself, she's good like that.
*Article is protected.