Eudokia Megale Komnene (died after 4 September 1395), was a Trapezuntine princess and a member of the powerful Byzantine Komnenos dynasty as a daughter of Emperor Alexios III of Trebizond.
She had two brothers, and four sisters; the eldest Anna later became Queen consort of Georgia as the second wife of King Bagrat V. The Chronicle of Michael Panaretos records the marriage on "8 October 1378 at Oinaion of Eudokia and Muslim Turkmen ruler Tadjeddin Pasha of Sinop, Emir of Limnia" after which "the Emperor took over Limnia".
"[2] According to Elizabeth Zachariadou, Tadjeddin was not prince of Limnia, but of Niksar, where the tomb of Melik Danishmend is located, and whose territory comprised the fertile plain of Phanaroia, and important fortresses such as Iskefser and Sonusa.
"It would be especially interesting to know why popular opinion made Alexios III refuse Tadeddin's first request for a bride in 1362," writes Bryer, then discusses possible political reasons for the extended parley and Eudokia's possible situation in Tadjeddin's court, before admitting that the situation "was probably left as ambiguous as Panaretos is on the subject, for, so far as Alexios III was concerned, the ends amply justified the means.
On 17 May 1395, she lost her second husband at the Battle of Rovine; and on 4 September of that same year, Panaretos notes that she "came from Constantinople with brides for her brother, Emperor Manuel and nephew, Lord Alexios", entering Trebizond "on Sunday, the following day in a shower of rain".