Sarmata of the Thebaid

Sarmata of the Thebaid (Sarmatas) was, according to the Roman Martyrology, an abbot in the Thebaid and disciple of Saint Anthony, killed by the Saracens. He is venerated in the Western Church and commemorated on 11 October.

The sources at hand say only this, in a single sentence, with no place name, year or other deeds. The fact that he is said to be a disciple of Anthony the Great would place his life in the 4th century, so a record with the 8th century is doubtful, and the detail of killing by Saracens does not suit that time. The dating remains uncertain.