Multiple realities(covers information from several alternate timelines)
Captain Adele Simmons was a Human Starfleet officer in the 24th century.
In 2354, she was named as a Starfleet Operational Support Services officer on a directory placard for Starbase 32, Maxia sector. Her room number was 35951. Simmons shared this room with Merri Howard, Diane Overdiek, Cheryl Gluckstern, David Rossi, Brad Yacobian, Doug Dean, Arlene Fukai, and Cosmo Genovese. (TNG: "Violations", directory)
She was named as a Starfleet Academy officer on the dedication plaque of Federation starships. (TNG: "The Wounded", dedication plaque; TNG: "Redemption II", dedication plaque)
In 2365, she was the commanding officer of the NCC-31810. She was named in the Starship Deploy Status chart that was on display in the courtroom of Starbase 173. (TNG: "The Measure Of A Man", okudagram)
She was named as a Fleet Ops officer on the dedication plaque of Federation starships. (VOY: "Caretaker", dedication plaque; VOY: "Ship in a Bottle", dedication plaque)
In an unknown, alternate future timeframe, she was named as a Tactical Systems officer on the dedication plaque of the USS Pasteur. (TNG: "All Good Things..." dedication plaque)
Simmons was named for first and second assistant director Adele Simmons.