Sean MacDonald

Sean was the Assistant Chief Navigator onboard the USS Paegan (NCC-1755) in the late 23rd century. 

Early life before Starfleet
Sean was born on May 29, 2242 human calendar time on the planet Earth in Aberdeen, Scotland.

Chronology

 * 2242: Sean is born on the planet Earth in Aberdeen, Scotland.
 * 2258: Sean enters Starfleet Academy
 * 2262: Sean graduates Starfleet Academy and promoted to Ensign, the first assignment is the USS Apus as a navigator.
 * 2265: Sean is promoted to Lieutenant junior grade and is assigned to the USS Corvus as a Navigator.
 * 2272: Sean is promoted to full Lieutenant and to the USS Paegan the Assistant Chief Navigator.