Christoper Pike was a Terran male, who served as a Starfleet captain in the mid-23rd century. He had, by the 2260s become the commanding officer of the ISS Enterprise.
Captain Pike was assassinated in the mid 2260s by his first officer, James Kirk. Kirk was then promoted to the rank of captain, and assumed command of Enterprise.
Pike's assassination was listed in Kirk's service record, and would be one of the first items listed by the computer when queried. (TOS: "Mirror, Mirror")