George Samuel Kirk, Jr.
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George Samuel Kirk, Jr., the eldest son of Winona and George Samuel Kirk Sr., and brother of James T. Kirk, was born on 12 August 2230. Unlike James, he was a scientist, and mainly worked and lived on the planet Deneva with his wife Aurelan and three sons Peter, Alexander, and Julius. (TOS novel: The Last Roundup)
In the late 2240s, George was already an accomplished scientist, and spent some time on Ganjitsu where he and Winona became good friends with Hikaru Sulu and his parents. (TOS novel: Enterprise: The First Adventure)
George traveled from colony to colony aboard an old Andorian merchant ship he owned, later sending for his family once he had established and set up their new home. (TOS eBook: Mere Anarchy: Shadows of the Indignant)
In 2264, Kirk visited Earth, for him and his mother to attend the change of command ceremony of the USS Enterprise from Captain Christopher Pike to James. (TOS novel: Enterprise: The First Adventure)
Unfortunately, George and Aurelan died on Deneva in 2267, following the invasion of neural parasites. However, he was survived by his three sons. (TOS novelization: "Operation: Annihilate!", Star Trek 2)
[edit] Notes
According to "Echoes of Yesterday" in the third TOS DC Comics special, George was born September 7, 2229, and his death took place on April 13, 2267.
As James T. Kirk "reflects" on having lost a brother (referring to Spock's death), George's reflection is in the viewport of Enterprise-A. (TOS comic: "Star Trek V: The Final Frontier")
