Oghuz (Mete) Khagan

https://en.wikipedia.org/wiki/Oghuz_Khagan

According to Oğuz Kağan Epic, Oğuz has two wives. Her first wife is a beautiful girl whom she finds and marries in an animal’s bucket on an island, and the other is another beautiful girl she finds in a blue light falling from the sky. Oğuz Kağan, who has three children from both of them, is the family Üçok branch that he found on the island, and the other is the Bozok branch, which derives from his wife from the sky. While the names of their children in the Üçok (terrestrial) branch are Deniz Han, Dağ Han and Gök Han, the names of children from the Bozok branch (celestial) are Gün Han, Ay Han and Yıldız Han. Kayı height is considered to have come from the son of Gün Han, who is the second wife of Oğuz, from Kayı.