J. Deleonvive was a Starfleet officer in the 24th century. This individual had served under Leyton.
In 2372, this individual was assigned to Engineering Operations. The effective date of this assignment was 49269. This officer was one of over four hundred officers reassigned in a three week period by Leyton. This officer's name was listed in the personnel assignment log that was displayed on a screen in Benjamin Sisko's temporary office in Starfleet Headquarters. (DS9: "Paradise Lost", okudagram)
This character was only mentioned in writing.