Eustratios, Presbyter of Constantinople ( 590s) was a pupil of Patriarch Eutychius of Constantinople

Patriarch Eutychius of Constantinople

Eutychius , considered a saint in the Catholic and Orthodox Christian traditions, was the Ecumenical Patriarch of Constantinople from 552 to 565, and from 577 to 582. His feast is kept by the Byzantine Church on 6 April, and he is mentioned in the Catholic Church's "Corpus Iuris"...

 (d. 582) and writer.

He is remembered as the author of a tract against belief in soul sleep entitled A Refutation of Those Who Say That the Souls of the Dead Are Not Active and Receive No Benefit from the Prayers and Sacrifices Made for Them to God. A Latin translation of this work De statu animarum post mortem was reprinted 1841.

Eustratios responds to arguments that the dead are "incapable of activity" (anenergetoi and apraktoi), by countering that the dead are even more active in death.

Other Byzantine

Byzantine

Byzantine usually refers to the Roman Empire during the Middle Ages.Byzantine may also refer to:* A citizen of the Byzantine Empire, or native Greek during the Middle Ages...

 writers opposing Christian mortalism were John the Deacon

John the Deacon (Byzantine writer)

The Byzantine John the Deacon is the author of a tract on the veneration of saints and against the doctrine of soul sleep.He was one of several Byzantine writers who wrote on this theme, from Eustratios of Constantinople and Niketas Stethatos, to Philip Monotropos and Michael Glykas.-References:...

, Niketas Stethatos, Philip Monotropos

Philip Monotropos

Phillipos Monotropos was a Byzantine monk and writer, notable for his authorship of the Dioptra , written towards the end of the eleventh century....

 (Dioptra pp. 210, 220), and Michael Glykas.