Timothy Lewis

Lt. j.g. Lewis was a Science officer onboard the USS Intrepid (NCC-1738) in the late 23rd century. 

Early life before the Intrepid
Tim was born on April 3, 2247 human calendar time on the planet Mars.

Chronology

 * 2247: Tim is born on planet Mars.
 * 2263: Tim enters Starfleet Academy
 * 2267: Tim graduates Starfleet Academy and promoted to Ensign, his first assignment is Starfleet Headquarters as a Science Officer.
 * 2270: Tim is promoted to Lieutenant junior grade and is assigned to the USS Intrepid as a Science Officer.