Lieutenant J. Lowry Johnson was a 24th centuryHuman. This person was from the non-Federation planet Alpha Cygnus II.
In 2369, Johnson was a crewmember aboard the Federation starship USS Enterprise-D. This person's proteins were tested by Doctor Beverly Crusher for a possible configuration match with the fragments of a 4 billion-year old genetic program. The results came back negative.
The test results for this Starfleet officer were listed on the chart USS Enterprise Personnel Database, which was displayed on a PADD used by Captain Jean-Luc Picard on aboard the Enterprise-D. (TNG: "The Chase", production art)