Antoinette Preston

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

Early life before the Intrepid
Toni was born on September 27, 2246 human calendar time on Starbase 11.

Family
Toni is the niece of Montgomery Scott and Peter Preston is her brother.

Chronology

 * 2246: Toni is born Starbase 11.
 * 2264: Toni enters Starfleet Academy
 * 2268: Toni graduates Starfleet Academy and promoted to Ensign, her first assignment is the USS Phoenix as a Navigator.
 * 2270: Toni is promoted to Lieutenant junior grade and is assigned to the USS Intrepid as a Navigator.