De acordo com a Memória Alfa:
Jane Wyatt, who played Spock's mother Amanda Grayson, was once asked by fans at a convention what Spock's first name was. She replied, perhaps jokingly, "Harold". [11] However, the question itself was flawed, since the episode "Journey to Babel" makes it clear that "Spock" is Spock's personal name.
On the other hand, Spock's family name has never been established in canon. In the episode "This Side of Paradise", Leila Kalomi says to Spock, "You never told me if you had another name," to which he replies, "You couldn't pronounce it." D.C. Fontana – who was considered the "Vulcan expert" of the TOS behind-the-scenes staff and who created such details as the fact that Spock's father was an ambassador and his mother a school teacher – revealed, in an issue of the fanzine Spockanalia, that she had intended his family name to be "Xtmprsqzntwlfd", but since this is unpronounceable, there wasn't really any way to get this said in dialogue during an episode.
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Na verdade, lembro de uma publicação na qual Spock era o nome do meio de Spock.
Seu nome completo era algo como Xantksisk Spock Xtmprsqzntwlfd. Mas nós teríamos que procurar qualquer publicação que fosse para descobrir como foi escrita.
Combinar isso com S'chn T'gai Spock faria um nome que seria um verdadeiro bocado.