"Saint Demetrios of Thessaloniki (Greek: Άγιος Δημήτριος της Θεσσαλονίκης) is a Christian martyr of the early 4th century AD.
During the Middle Ages, he came to be revered as one of the most important Orthodox military saints, often paired with Saint George. His feast day is 26 October for Eastern Orthodox Christians, which falls on 8 November [NS] for those following the Old calendar. In the Roman Catholic church he is most commonly called "Demetrios of Sermium" and his memorial falls on 8 October." - (en.wikipedia.org 29.11.2019)
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