R. Dening was a Starfleet officer in the 23rd century.
Dening a member of the Tactical Ops team listed on the dedication plaque of the USS Discovery. (DIS: "Context Is for Kings", dedication plaque)
Dening was listed as a member of Science Ops on the dedication plaque of the USS Enterprise. (SNW: "Strange New Worlds")
This character was only mentioned in writing. The character was named for Production Illustrator Ryan Dening.