Does Leo have a boston accent?
I figured that since his character in this movie is from Boston that he might have a Boston accent in this film like he did in the movie The Departed

I'm sure he would have the accent. Don't think it's mentioned in the book, but logically I would expect it. Dolores' Boston accent is mentioned.... Wide awake and hearing her voice, the dusk in it, the faint Boston accent that didn't reveal itself on the a and r, so much as the e and r so that Dolores loved him in a whispered "foreva and eva".