- You may also be looking for Captain John Nesterowicz.
John Nesterowicz was a Starfleet officer of the 24th century.
In 2371, he was a crewmember aboard the USS Voyager. He was among the crew stranded in the Delta Quadrant, when Voyager was forcefully brought there by the Caretaker.
In 2374, he was listed on a crew manifest. (VOY: "The Killing Game", crew manifest)
This character was only mentioned in writing.