With the recent appearence of Tritoma in the manga,many people speculated that she may be Luffy's mom
But,recently,i thought something: As far as we know,Luffy had no idea who his father was,because when Garp reveals his name (Dragon) to him,he seems to have never even asked this question to himself,about who his father was. But Luffy never says anything about his mother,in that situation.
We know that,after the Shanks "incident" Garp takes Luffy to Dadan,but before that,how did he lived?
He was friend with Makino,the Mayor,and with Shanks,but Luffy surely had some place to live. And do we have to think he was living alone?? Maybe...there was him mom with him!
Also,we have this promotional panel for the "Red" movie,that should be canon as it was a panel made by Oda,where we see a woman with a baby,a baby that is not Uta
So,what if Luffy actually lived the first years of his life with his mother,and then the real reason why Garp did bring him to live with Dadan,was not only because of what happened with Shanks,but also because his mother was dead? In this way,Luffy actually got to knew his mother,and maybe he will reveal it himself one day,maybe when he'll meet Dragon.

But,recently,i thought something: As far as we know,Luffy had no idea who his father was,because when Garp reveals his name (Dragon) to him,he seems to have never even asked this question to himself,about who his father was. But Luffy never says anything about his mother,in that situation.
We know that,after the Shanks "incident" Garp takes Luffy to Dadan,but before that,how did he lived?
He was friend with Makino,the Mayor,and with Shanks,but Luffy surely had some place to live. And do we have to think he was living alone?? Maybe...there was him mom with him!
Also,we have this promotional panel for the "Red" movie,that should be canon as it was a panel made by Oda,where we see a woman with a baby,a baby that is not Uta

So,what if Luffy actually lived the first years of his life with his mother,and then the real reason why Garp did bring him to live with Dadan,was not only because of what happened with Shanks,but also because his mother was dead? In this way,Luffy actually got to knew his mother,and maybe he will reveal it himself one day,maybe when he'll meet Dragon.