I’ve heard rumours that he is/was a preist. Reading this fascinating trilogy I am curious about him. I realize that I could google this, but I prefer asking here.
Try here.
But none of the biographies I found mention his having ever been a priest . This page does a timelineof his life, and searching the page didn’t turn up any mention of his being a priest.
The Random House biography also doesn’t mention it.
He was never a priest, but I belive his grandfather was a minister.
Here’s an interview where he discusses his grandfather:
http://www.fish.co.uk/culture/features/pullman_interview.htm