Sam Mitchell

Sam was the Assistant chief engineer onboard the USS Bellatrix (NCC-1832) in the late 23rd century. 

Early life before Starfleet
Sam was born on April 27, 2242 human calendar time on the planet Earth in San Francisco, California.

Chronology

 * 2242: Sam is born on the planet Earth in San Francisco, California.
 * 2258: Sam enters Starfleet Academy
 * 2262: Sam graduates Starfleet Academy and promoted to Ensign, the first assignment is the USS Zetar as an engineer.
 * 2265: Sam is promoted to Lieutenant junior grade and is assigned to the USS Murasaki as an engineer.
 * 2270: Sam is promoted to full Lieutenant and to the USS Bellatrix the Assistant Chief Engineer.