The Monks Theodosii (Feodosii) the Bulgarian and his Disciple Roman:

Commemorated on February 17

      The Monks Theodosii (Feodosii) the Bulgarian and his Disciple Roman: The monk Theodosii began his exploit in the city of Viddino, at the Nikolaev monastery. After the death of the hegumen Job he settled not far from Tirnovo, then the capital city of Bulgaria, at the Svyatogorsk monastery of the MostHoly Mother of God in search of a spiritual guide. He left the Holy Mount (Svyatogorsk) monastery and for a long while went about from monastery to monastery. Finally, he learned about the wilderness-monastery termed "Concealed" where in pursuit of asceticism the monk Gregory the Sinaite (Comm. 8 August) had moved from Athos. The monk Theodosii found in him an experienced guide of the contemplative life. The monk Gregory taught: "Before death we lay in hades; whosoever does not recognise sincerely that he is a sinner, that the beasts and cattle are more pure, – that one is more wicked than the demons, in having become their obedient slave".
      The wilderness monastery of the monk Gregory the Sinaite suffered often from robbers. The abba sent the monk Theodosii to the emperor Alexander with a request for defense of the monastery. The pious Bulgarian tsar, at the request of the ascetic, provided him greater means to wall in the monastery by strong walls with towers, and made secure the monastery with grounds and cattle. During the time of his final journey to Tirnovo with an errand of the abba to the tsar, a nobleman turned to the monk Theodosii with a request to take him along to the monastery. The holy ascetic brought him to the monk Gregory the Sinaite. This was Roman, – becoming the sincere and beloved disciple of the monk Theodosii. After the death of the monk Gregory the Sinaite, the monk Theodosii refused to accept being head of the monastery, and together with his disciple Roman he set off from the monastery for solitary efforts. They founded a monastery on an hill round about Tirnovo, afterwards called Theodosiev. The monk Theeodosii was famous as a zealous defender of Orthodoxy against the many heresies then appearing, especially the Bogomils, Judaisers and Messalians. Their false teachings were especially pernicious. The Patriarch and the tsar rendered great help to the monk Theodosii in the struggle with the heretics. In addition to this, the holy ascetic translated Greek writings into the Slavonic language. In 1360 he became grievously ill. Wishing to meet with his friend the monk Kallistos, he set off to him at Tsar'grad, entrusting the guidance of the monastery to his disciple Roman.
      On 17 February 1362 the monk Theodosii died at Tsar'grad. His disciple the monk Roman became head of the monastery founded by him.