Zaydi al Qahtani

Zaydi al Qahtani was the leader of the Geziri tribe who got too close to the humans (more than all other Daeva tribes) and adopted their name for the Daeva - "Djinn". He, together with the other tribes, invaded Daevabad, where the Nahids were overseeing and ruling the Daeva world. The Qahtanis are still ruling the city of Daevabad to this very day; this was ~1400 years ago.