Well first I want to note something about the god of elbaf. As you can see; he is not called the god of elbaf but rather he is called "God Elbaf". This leads me to believe that Elbaf(the country) is named after God Elbaf and that God Elbaf is most likely the founder of Elbaf. Because of this, i believe that God Elbaf is most likely the oldest giant in One Piece; as Elbaf probably existed for a long time. And I don't believe that God Elbaf is just old; i believe he is around 600-700 years old, and that his father was friends with joyboy. As we know, giants have "gigantic" lifespans so their could be a giant that is 600-700 years old. Furthermore i believe that God Elbaf knows the true location of the ancient weapon Uranus(see my elbaf theory to know about what uranus is) as well as having a ponoglyph. As i said; God Elbaf is most likely Old and is the founder of Elbaf. I already stated my reasoning for why elbaf(god) is old and the founder of elbaf(country); however i have one more reason for this. That is because i believe that God elbaf is based of this person