Donna Tyler

Donna was the Assistant Chief environmental officer onboard the USS Bellatrix (NCC-1832) in the late 23rd century. 

Early life before Starfleet
Donna was born on September 27, 2242 human calendar time on the planet Earth in Essex, England.

Chronology

 * 2242: Donna is born on the planet Earth in Essex, England.
 * 2258: Donna enters Starfleet Academy
 * 2262: Donna graduates Starfleet Academy and promoted to Ensign, the first assignment is the USS Shiaparelli as an environmental officer.
 * 2265: Donna is promoted to Lieutenant junior grade and is assigned to the USS Deslandres as an environmental officer.
 * 2270: Donna is promoted to full Lieutenant and to the USS Bellatrix the Assistant Chief Environmental Officer.