Is Ussop based on Aesop?
Ussop's name is probably based on "Isoppu" which is the Japanese pronunciation of Aesop. (One Piece Wiki)


The Wiki also claims "uso" means "lie" in Japanese so Ussop is a combination of "liar" and "storyteller" (Aesop). Basically this says it is likley but the source is not at all canon. We don't know as Oda hasn't definitively said, but probably.