Nowadays,we dont trust Oda anymore,as he often trolls us. But this time,he may just revealed us the truth,without games and twists. The Will of D. is the Will of Davy,as Xebec said.
Many people theorize that D. means Dawn,or Destiny etc. but,isnt a "will" something that must belong to a person,and not an enitity? So the person in this case,is Davy Jones.
And the fact that Xebec's name would be Davy Davy Xebec? Well,we must remember that Xebec's public name is Rocks D. Xebec,so maybe that was a sign to comunicate that altough he was hiding the Davy's last name,he was still carrying the Will of Davy.
Another thing we should consider,is the possibility that the D. doesnt belong to families as part of the last names. The D. is probably something that anyone can have,if they joing the ideology of Davy.
For example,we saw the scene where Luffy and Ace as kids tells Sabo he can have the D. in his name too,and altough that was potrayed as a playful scene,it may actually reveal how this D. thing works! Everyone who joins the Davy ideology can put the D. in his name,i think thats how it works.
Many people theorize that D. means Dawn,or Destiny etc. but,isnt a "will" something that must belong to a person,and not an enitity? So the person in this case,is Davy Jones.
And the fact that Xebec's name would be Davy Davy Xebec? Well,we must remember that Xebec's public name is Rocks D. Xebec,so maybe that was a sign to comunicate that altough he was hiding the Davy's last name,he was still carrying the Will of Davy.
Another thing we should consider,is the possibility that the D. doesnt belong to families as part of the last names. The D. is probably something that anyone can have,if they joing the ideology of Davy.
For example,we saw the scene where Luffy and Ace as kids tells Sabo he can have the D. in his name too,and altough that was potrayed as a playful scene,it may actually reveal how this D. thing works! Everyone who joins the Davy ideology can put the D. in his name,i think thats how it works.