Sources and Identity
The OCA calendar entry for August 13 names Monastic Martyr Dositheus among that day's commemorations, alongside Saint Tikhon of Voronezh, the translation of the relics of Saint Maximus the Confessor, Martyr Hippolytus of Rome, the Empress Irene, and several icons of the Mother of God. The entry itself states that no information is available.
Beyond the OCA troparia, which confirm both ascetic and martyr titles without supplying dates, a place of origin, or the manner of his death, no dedicated account of this saint appears in the consulted reference works. No distinct biographical article was found for a Monastic Martyr Dositheus separate from the better-documented Dositheus of Gaza.
By tradition associated with the same date, Venerable Dositheos of Gaza was a sixth-century disciple of Abba Dorotheus at the monastery near Gaza, remembered for humility and for his gentle care of the sick before an early death from illness. That figure is consistently styled venerable, not martyr; the Greek calendar keeps him on August 13 and the Slavic calendar on February 19. Whether he and the Monastic Martyr Dositheus of August 13 are one and the same remains uncertain in the sources, which differ on his rank.