Saint Demetrius lived in the 3rd century. His father was governor of Thessaloniki. Emperor Maximian appointed Dimitar to a high military post and tasked him with persecuting Christians. However, the saint was baptized as a child and rather patronized his brethren. He was therefore martyred by the emperor on October 26.
As part of the early martyrs, Dimitar is depicted as young, with short hair and no beard. He often holds a spear or sword in his hand, and his clothes are entirely military.
In the early iconographic types it is depicted in a waist-length image or sitting on a throne. In these cases, usually pierced with a spear or sword scorpion. After the 16th century, he was portrayed as one of the horsemen of the apocalypse, riding a red horse. In these images, St. Demetrius kills a symbol of evil. In many Bulgarian icons his copy pierces Basil II, a Bulgarian murderer or Turk. In Greek iconography, the victim is the Bulgarian king Kaloyan. The Orthodox Churches, in order to smooth out possible nationalist interpretations of iconography, accept that the victim of St. Demetrius is the antichrist.
During the Second Bulgarian State, St. Demetrius was among the most revered saints and especially in the capital Tarnovo. The first Asenevtsi consider Saint Dimitar as their patron. According to legend, he appeared to Assen in a dream and showed him a place to build a church named after St. Demetrius. Assen took this as a sign and raised the uprising of October 26, 1185.
In the Bulgarian folk tradition, St. Demetrius is considered the brother of St. George and the two share the year - summer and winter. Winter and the first frosts begin on October 26. Then the agricultural activities ended. Saint Demetrius is the patron saint of cold and winter. Also in Thessaloniki.