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Jon Djanrelian was a 24th century Starfleet officer.
Djanrelian was listed in a USS Voyager crew manifest viewed by Captain Kathryn Janeway in 2371. (VOY: "Projections" set art)
He was an engineer in the Starfleet Shipyards Operations at the Beta Antares Ship Yards when that team helped to build the USS Prometheus. As such, his name was listed on that starship's dedication plaque. (VOY: "Message in a Bottle" set art)
Named after craft service member Jon Djanrelian.