Gökhan is a Turkish forename meaning "ruler of the sky". The stem of the name comes from the "Gök" and the "(K)Han words. Gök means sky or heaven in Turkish and Khan is (in the Altaic group of languages) a title held by hereditary rulers or tribal chiefs.
Most likely, the first appearance of the name Gökhan is as one of the six sons of Oğuz Khan who ruled Oğuzlar.
Gokhan is such a cool guy.