Katherine Sheridan

Katherine Sheridan was a human Starfleet officer in the late 24th Century. Known to most people as "Kate", she was possibly born on the missing USS Voyager (NCC-74656) in 2379, the daughter of that ship's captain, Kathryn Janeway.(Star Trek: The Adventures of Argus)

Origins
Kate Sheridan was discovered by the USS Constitution on stardate 48307.5 (2371), comatose in a drifting shuttlecraft at the source of a sudden burst of cronoton energy. Kate was brought out of her comotose state thanks to Bimitri Cassaria, who was serving as the Constitution's Counsellor, but she had no memory of who she was or where she'd come from. Fortuinatly several pieces of data were able to be retreaved from the shuttlecraft's damaged computer including her name, date of birth and the name of her mother, Kathryn Janeway.These details seemed to confirm that Kate had been termporaly displaced, specifically from the year 2404. However her appearance also coinsided with the disappearance of her mother's ship, the USS Voyager (NCC-74656), which lead to some suspision that she was a spy sent to cover up the ship's capture and she was handed over to Starfleet Inteligence and Temporal Investigations. ("Messages From Home")

Kate remained in the custody of Temportal investigations for six months, under the watchful eyes of Agents Dulmer and Lucsly, where she demonstrated a good knowledge of Starfleet Tactical and Security training to a level only taught at the Academy. Satisfied that she was no danger, she was released and granted a starfleet commision at the rank of Lieutenant, although the two Agents continued to follow her movements well into 2374. ("Messages From Home")

Aboard the USS Crocket
Upon being granted her commision, Kate was assigned to the USS Crockett (NCC-38995) as junior security officer. However due to her uncertain background, her superior officers found her difficult to trust and she was given little responsibility or opertrunity to prove herself. The one execption was a joint mission between the Crockett and the USS Sovereign (NX-74222), where she saved the life of the Sovereign's Second Officer Jonozia Lex. Her heroisum left a lasting impression on Lex and he recognised her as an untapped talent, recommending her for the USS Argus (NCC-75124) when he was appointed that ship's First Officer.("Trial By Fire")

Aboard the USS Argus
Kate joined the Argus ' security department during the ship's refit in late 2373. She was promoted to Tactical Officer by Jonozia Lex when he took command of the ship in early 2374. However this promotion wasn't supported by the Argus ' new First Officer Thomas Patel, who distrusted her for the same reasons as her superiors on the Crockett and he managed to block her from becoming Security Chief as well.

Two weeks later Kate was part of the rescue mission to Tyra III. After witnessing Thomas Patel's capture by the Jem'hadar on the surface, she mounted a raid on the Preserver temple they were using as their base of operations, rescuing Patel along with several other personnel and earning the First Officer's trust. When Lex decided to promote her again, this time to Second Officer and Lieutenant Commander, it was Patel who presented her with her rank pips. ("Trial By Fire")

On stardate 51459.4 Kate was temporaliy assigned to the USS Defender (NCC-74208) during the mission to recapture the USS Prometheus (prototype) from Romulan forces that had hyjack the ship. When the ship was recaptured the Emergency Medical Hologram from the USS Voyager (NCC-74656) was discovered, corberating the evidence of Kate's origins for the first time. ("Messages From Home")