Martyrdom
The accounts of his life relate that Argyrios confronted a former Christian who had renounced his faith and embraced Islam, urging him to return to the Orthodox Church. Janissaries who overheard the exchange attacked him and attempted to compel him to convert through threats and beatings.
He was brought before the local Kadi, the Muslim judge, who by these accounts initially found that his advocacy of his faith was not a punishable crime. The Janissaries insisted that his words against Islam warranted death. Pressed during interrogation to deny Christ, Argyrios declared that he had been born a Christian and would die a Christian. He was executed by hanging on Friday, May 11, 1806, in the Kapani marketplace of Thessaloniki, at approximately eighteen years of age.