Oh god, that makes a lot of sense. I was wondering what the deal was with Pedro speaking in another person's voice, and why he immediately brings up his grandfather-- it might have been a P speaking, just not him. That also fits in well with the fact that Pedro specifically states that, if Zezé were some sort of mythical being, his father and grandfather never brought it up, which seems to indicate that they weren't aware of Zezé's true nature in advance.