Saint Euphemia is a Christian martyr who is venerated in both the Eastern Orthodox and Roman Catholic traditions. She is believed to have lived during the 4th century in Chalcedon, a city in modern-day Turkey. Euphemia is known for her steadfast faith and courage in the face of persecution, ultimately leading to her martyrdom. Her feast day is celebrated on September 16th, and she is often depicted in art holding a palm branch, symbolizing victory over death. The relics of Saint Euphemia are housed in the Church of Saint Euphemia in Venice, Italy, where many pilgrims visit to honor her memory.