A. Codron was a propulsion systems officer who worked on the Enterprise NX-01. As such, his name was among those listed on the NX-01's dedication plaque. (Star Trek: Enterprise set artwork)
In January of 2155, Codron worked in (or as) Guidance and Navigation at the Fleet Operations Center on Earth. Codron's office was located in room 4309. (ENT: "Demons" set artwork)
Codron's name was seen on directory listings seen on the set of "Demons" as well as on the dedication plaque, and is an homage to
Enterprise visual effects supervisor Arthur J. Codron.