Kathleen Mulligan

Lt. Mulligan was the Assistant Chief Communications officer onboard the USS Intrepid (NCC-1738) in the late 23rd century. 

Early life before the Intrepid
Kate was born on April 4, 2245 human calendar time on the planet Earth in Dublin, Ireland.

Chronology

 * 2245: Kate is born on the planet Earth in Dublin, Russia.
 * 2261: Kate enters Starfleet Academy
 * 2265: Kate graduates Starfleet Academy and promoted to Ensign, his first assignment is the USS Deneb as a communications officer.
 * 2268: Kate is promoted to Lieutenant junior grade and assigned to the USS Jupiter as a communications officer.
 * 2270: Kate is promoted to full Lieutenant and is assigned to the USS Intrepid as the assistant chief communications officer.