Eustathios Argyros (general under Leo VI)

Eustathios Argyros
Died	ca. 910 Mt. Aran
Allegiance	Byzantine Empire
Rank	strategos of the Anatolics and of Charsianon, Drungary of the Watch
Relations	Leo Argyros (father), Pothos Argyros, Leo Argyros (sons)

Eustathios Argyros (Greek: Εὐστάθιος Ἀργυρός; died ca. 910) was a Byzantine aristocrat and one of the most prominent generals under Emperor Leo VI the Wise (r. 886–912). The first member of the Argyros family to rise to high posts, he fought with distinction against the Arabs in the east, before being disgraced ca. 907, possibly in connection with the flight of Andronikos Doukas to the Arabs. Rehabilitated soon after, he was appointed as strategos of Charsianon, from which post he oversaw the settlement of Armenian lords as march-wardens along the Empire's eastern frontier. Promoted to commander of the imperial bodyguard in late 908, he again fell into disgrace shortly after and died of poison (apparently a suicide) on his way to his estates.

Eustathios Argyros was the son of the tourmarches Leo Argyros, the founder of the noble Argyros family.

Nothing is known of his life or prior to the turn of the 10th century, although he may have been in imperial service as early as 866, when a man of the same name is recorded as protostrator of the Caesar Bardas in connection with the latter's murder on 21 April. The Byzantine historians praise Eustathios Argyros as an intelligent, valiant, prudent and just man, and account him, along with Andronikos Doukas, as the best of Leo VI's generals. The historians Jean-Claude Cheynet and Jean-François Vannier, experts on Byzantine prosopography, consider him "the true founder of the family's glory".

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