Ensign Markson was a member of the USS Enterprise-D crew.

In 2370, Markson's possible romantic relationship with Nurse Alyssa Ogawa became the subject of a lengthy conversation between Doctor Beverly Crusher and Captain Jean-Luc Picard during breakfast one morning, although Picard did not pay close attention as he was distracted by a diplomatic situation involving the Kes. (TNG: "Attached")

This character was only mentioned in dialogue.
Ogawa and Markson must have ended whatever romantic association well before TNG: "Lower Decks", at which point Ogawa had been dating Lieutenant Andrew Powell for some time.
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