Yes.
They must die. And then you'll find out.
There was no evidence to that prior knowledge.
when did Jack Bradshaw die
== == No he did not die
It is unclear if Jack is going to be a doctor because there is no information about who Jack is. A last name is required to fond information about him.
Molly's baby did not die. The baby boy, named Jack is still alive, though currently (July 2014) not active in the show.
me Jack Amoroso
Jack Straw is not dead.
Jack didn't die in Every Soul A Star.
No, Jack Sparrow does NOT die in POTC 4.
Jack died
Jack Sholomir died in 1988.