Retcon article
(covers information that was retroactively changed)

Giuseppi T. Salvatore was the father of Starfleet ensign Bruno Salvatore and the husband of Viola Salvatore. (TNG: "Eye of the Beholder")

This character was only mentioned in writing.
An okudagram readout of Bruno Salvatore's personnel file was displayed on a viewscreen that Deanna Troi was studying. Some of the facts could be called into question since she was involved in a very detailed hallucination when the data was shown.
For the remastered episode, the name was changed to Eric Salvatore.