Lee Kelso

Lee Kelso was a officer on active duty in the mid-23rd century.

Early life
Kelso's parents died when he was very young, and he was raised in an orphanage in Los Angeles. ( trilogy: Republic)

Starfleet
As a lieutenant junior grade, Kelso served under James T. Kirk during Kirk's first command, aboard the destroyer USS Shenandoah, in 2264. (Orion Press: "Spider's Lair")

Kelso had transferred to Enterprise by the time of its mission to the galactic barrier. He was strangled by power cables telekinetically manipulated by Gary Mitchell after Mitchell's esper abilities were enhanced by the barrier. 

(2009) continuity
In the ongoing IDW comic series based on (2009), Kelso and Mitchell had been classmates of Kirk's at Starfleet Academy.