George Samuel Kirk George Samuel Kirk was a male Human scientist in the 23rd century . He was married to Aurelan and they had three sons , including Peter . He was the brother of famed Starfleet Captain James T . Kirk , who was the only one who called him " Sam " . In 2265 , George saw James off when the captain began a five - year mission of exploration in command of the . Also saying farewell were Aurelan and their three sons . On this occasion , Sam mentioned that he wished to be transferred to the Earth Colony II research station . ( ) Sam was a research biologist living with his family on Deneva the following year , when vessels from Ingraham B arrived carrying neural parasite s . Many of the colonists , including Sam , were attacked and infiltrated by the parasite s . Resisting the parasites ' control was excruciatingly painful , but in early 2267 , eight months after the Ingraham B vessels arrived , Aurelan managed to break the long communication blackout and get a brief distress call out to the " Enterprise " . By the time the ship arrived , Sam was dead ; his wife died soon after . Their son , Peter , lived and was ultimately freed of the parasites . ( ) Sam ' s private transmitter was designated GSK 783 . ( ) Appendices . Background information . The corpse of George Samuel Kirk was portrayed by William Shatner with a mustache and a different hairstyle . This was the only time that Shatner portrayed a character other than James T . Kirk ( or Kirk ' s body being invaded or mimicked by another being ) . George Samuel Kirk was to appear in ' s ( referred to in the film ' s script as " George Kirk , Jr . " ) , where he would have been played by Spencer Daniels . Scenes featuring Daniels as Sam Kirk were filmed , but the character was entirely cut from the final release . The one remaining scene of Daniels playing Sam Kirk , in which Jim Kirk called out to him as he was driving past him in their uncle ' s ( in the final cut , their step - father ' s ) Corvette , was altered to change the name of Daniels ' character to " " , apparently a friend of Jim ' s . George Samuel Kirk ' s deleted scene from 2009 ' s " Star Trek " was available on , as well as the Blu - ray set " " . In the scene , George ran away from home and his brother to escape the cruelty of their , finding it impossible to " be a Kirk " in Frank ' s household . He was also angered that Frank had claimed their late father ' s Corvette as his own . After George left , Jim found the keys to the Corvette and drove off in the car . As originally conceived , Jim drove by and called out to a shocked George , who had been trying to hitchhike . Apocrypha . George Samuel Kirk appeared in the last chapter of novel " Last Full Measure " , set in 2238 , in which an elderly Trip ' s first visit to the Starfleet War Memorial coincided with that of young Sam and Jimmy Kirk , rendering the quiet reflection he had hoped for an impossibility . The scene established George ' s birthdate August 12 , which was also when Federation Day was celebrated . However , according to " Echoes of Yesterday " in TOS Special 3 , George ' s birthdate was September 7 , 2229 , and his death took place on April 13 , 2267 . ( " Operation – Annihilate ! " originally aired on April 13 , 1967 ) A slightly altered version of George ' s deleted scene from 2009 ' s " Star Trek " was found in the film ' s novelization . Among the scene ' s changes made for the book was George ' s revelation that Frank ( who in a merger of the script and film characters the boys ' stepfather , not uncle ) wanted Jim to wash the Corvette , which had belonged to their late father , because he intended to sell it behind their mother ' s back - it was after hearing this that the decision to steal the car was made . The alternate reality George appeared in IDW Publishing ' s " " comic series , exploring events of the original series in the alternate reality , which clarified that the boys lived with their uncle until George ran away to live with his grandfather . This later led to a rift between the brothers , James feeling that George had abandoned their mother . During their investigation of the neural parasites , Kirk and the crew discovered George living underground with his family to escape the influence of the parasites after their attack on the colony , with the " Enterprise " subsequently devising a means to banish the parasites and cure George ' s family , which here consisted only of his wife Aurelan and one son , . At the story ' s conclusion , George and his family return to the colony , with George complimenting his brother ' s success , a degree of reconciliation having been reached between the two of them . His mirror universe counterpart was mentioned as being a Terran Empire scientist in the short story " The Greater Good " contained in the anthology " Shards and Shadows " . In 2263 , he was awarded the Zee - Magnees Prize for his work in precision frontal lobotomy . As he had no interest in a military career and his brother had no interest in science unless he could manipulate it to make his life easier , neither brother had to worry about the other getting in the way of his career and having to be eliminated .