Gregory Jein (Captain)

From Memory Alpha, the free Star Trek reference.

Gregory Jein was a Starfleet captain in the 24th century.

Jein was part of the shipyard engineering team which helped design and construct the starship USS Enterprise-D. His name was listed on the dedication plaque of that starship when it was commissioned in 2363. (Star Trek: The Next Generation)

Jein's name was an inside reference to production staff associate Gregory Jein.