I had heard Luffy's mother was alive a while back not sure if this was confirmed by Oda or whatever. If she is alive I was wondering, do you think Luffy knows his mother and just doesn't talk about her since no one in the crew actually talks about their family ? Or do you think just like Luffy's father he has no clue who is parents are ?
Personally I think the latter, just like with Ace & Sabos' appearance it was a surprise no one knew he had older brothers, even with Garp... I mean he didn't bother to mention to any of his crew that his grandpa is a big time vice admiral.