Saint Demetrius of Thessaloniki

Saint Demetrius (or Demetrios) of Thessalonica (Greek: Ἅγιος Δημήτριος τῆς Θεσσαλονίκης, Hágios Dēmḗtrios tēs Thessaloníkēs), also known as the Holy Great-Martyr Demetrius the Myroblyte (meaning 'the Myrrh-Gusher' or 'Myrrh-Streamer'; 3rd century – 306), was a Greek 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 of Lydda. In the Roman Catholic Church he is most commonly called Demetrius of Sirmium and his memorial is 9 April in the 2004 Roman Martyrology and 8 October in the martyrology of the Extraordinary Form. It is debated whether Demetrius of Thessalonica and Demetrius of Sirmium are the same person. The earliest written accounts of his life were compiled in the 9th century, although there are earlier images of him, and the 7th-century Miracles of Saint Demetrius collection. According to these early accounts, Demetrius was born to pious Christian parents in Thessalonica, Macedonia in 270. According to the hagiographies, Demetrius was a young man of senatorial family who became proconsul of the Thessalonica district. He was run through with spears in around 306 in Thessalonica, during the Christian persecutions under the emperor Galerius, which matches his depiction in the 7th-century mosaics. Most historical scholars follow the hypothesis put forward by Bollandist Hippolyte Delehaye (1859–1941), that his veneration was transferred from Sirmium when Thessaloniki replaced it as the main military base in the area in 441/442 AD. His very large church in Thessaloniki, the Hagios Demetrios, dates from the mid-5th century. Thessaloniki remained a centre of his veneration, and he is the patron saint of the city.