J. Devlin was a member of Starfleet in the 22nd century.
In January of 2155, Devlin worked as a flight surgeon at the Fleet Operations Center on Earth. Devlin's office was located in room 1365. (ENT: "Demons" set artwork)
Devlin's name was seen on directory listings seen on the set of "Demons".
J. Devlin was named after Enterprise grip Jay Devlin.