Deep Space 9 - vessel arrival roster

The arrival roster at Deep Space 9 listing Capt. Sondheim

S. Sondheim was a starship captain in the 24th century. Sondheim was the commander of the USGS Powell.

In 2370, Sondheim was listed on the Deep Space 9 arrival roster. (DS9: "Whispers", production art)

This character was only mentioned in writing.
The graphic was also populated by a number of other in-jokes. He was presumably named after composer Stephen Sondheim.