(covers information from several alternate timelines)
David Livingston was a Starfleet flag officer who lived during the mid-24th century.
In 2353, he was listed as a Starfleet Operational Support Services officer on a directory placard at Starbase 32, Maxia sector. His office was located in room #24879. (TNG: "Violations", directory)
In 2363, Vice Admiral Livingston was head of Fleet Administration in the Yoyodyne Division at 40 Eridani A Starfleet Construction Yards during the construction of the USS Phoenix. (TNG: "The Wounded", dedication plaque) Later the same year, the admiral was one of the Starfleet Command officers at the Utopia Planitia Ship Yards whose name later appeared on the 2368 updated dedication plaque for the USS Enterprise-D. (TNG: "Silicon Avatar", dedication plaque)
In 2367, he was again with Fleet Administration with San Francisco Fleet Yards' Yoyodyne Propulsion Systems at the time of the construction of the USS Sutherland. (TNG: "Redemption II", dedication plaque)
In 2370, he was one of the Starfleet Command officers at Antares Ship Yards during the construction of the USS Defiant. (DS9: "The Die is Cast", dedication plaque)
In 2371, he was one of the Starfleet Command officers at Earth Station McKinley during the construction of the USS Voyager. (VOY: "Caretaker", dedication plaque)
In 2375, he was one of the Starfleet Command officers at Utopia Planitia Fleet Yards during the construction of the USS Sao Paulo (DS9: "The Dogs of War", dedication plaque)
In an unknown, alternate future timeframe, he was listed as a Starfleet Command officer on the dedication plaque of the USS Pasteur. (TNG: "All Good Things...", dedication plaque)
This character was only mentioned in writing.
He was named after production staff member David Livingston.