Gemma Costa

Gemma was a Science officer onboard the USS Xerxes (NCC-505) in the late 23rd century. 

Early life before Starfleet
Gemma was born on December 12, 2252 human calendar time on Earth in Pisa, Italy.

Chronology

 * 2252: Gemma is born on Earth in Pisa, Italy.
 * 2268: Gemma enters Starfleet Academy
 * 2272: Gemma graduates Starfleet Academy and promoted to Ensign, the first assignment is the USS Xerxes as a science officer.