Saint Eutropius of Aosta was a Christian martyr and is venerated as a saint in the Catholic Church. He is believed to have lived in the 4th century and is associated with the region of Aosta Valley in Italy. His life is celebrated for his dedication to spreading Christianity and his eventual martyrdom for his faith. His feast day is observed on January 30, and he is often depicted in art as a figure of resilience and faith. Saint Eutropius is also recognized as the patron saint of Aosta, and his legacy continues to inspire devotion among the faithful in the region.