Marian Fife was a Starfleet officer in the 24th century.

In 2365, she was listed as the commander of a ship with the registry NCC-21335 on the Starship Deploy Status chart in the Starbase 173 courtroom. (TNG: "The Measure Of A Man", okudagram)

This character was only mentioned in writing.
She was named after TNG studio teacher Marian Fife.