Yuriel Tyvan was an El-Aurian refugee of the Borg invasion of 2293. After his encounter with Starfleet, he joined it, and became a counselor, coming to work on the USS Enterprise-C in 2336. He held the rank of commander that year. He counseled many, including Darya Bat-Levi. (ST - The Lost Era novel: Well of Souls)

USS Enterprise-C personnel
Emblem of the United Federation of Planets. AlfonzoAriaAristideBat-LeviA. BatraBulastCarmonaCasadoCastilloChu-FongCohenCoronDonaldFredericksGarrettThule G'Dok Glemooral-HalakHemachandraHolmesJuniorKatieKeplerKodellLoPrestiLuttrullMcAvennieNeeNorrieParkerSinghSinghStachowSternStewartThithtaTholavTyvanVaraniVinson Seal of the Federation Starfleet.
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