Quentin Tate

Q was the Assistant Chief Tactical officer of Starbase 7 in the late 23rd century. (Star Trek: The Intrepid Adventures)

Early life before Starfleet
Q was born on October 8, 2235 human calendar time on Earth in Tokyo, Japan.

Chronology

 * 2235: Q is born on Earth in Tokyo, Japan.
 * 2253: Q enters Starfleet Academy
 * 2257: q graduates Starfleet Academy, is promoted to Ensign. The first assignment is the USS Apus as a Tactical Officer.
 * 2260: Q is promoted to Lieutenant junior grade and is a Tactical Officer on the USS Samson.
 * 2265: Q is promoted to full Lieutenant and is the Assistant Chief Tactical Officer on the USS Quindar.
 * 2270: Q is promoted to Lieutenant Commander and is made the Assistant Chief Tactical Officer on Starbase 7.