About Spock's full name, the last page of Barbera Hambly's novel
Ishmael gives it as S'chn T'gai Spock. Sarek is S'chn T'gai Sarek of the Hgrtcha Clan.
The old Treknical fanzine
USS Enterprise Officer's Manual by Geoffrey Mandel gave his full name as Xtmprszntwlfd Spock. I imagine he just mashed the keyboard.