St. Florian is a Christian saint and martyr, known as the patron saint of firefighters and chimney sweeps. He lived in the 3rd century and is often depicted holding a bucket of water or a flame. His feast day is celebrated on May 4th, and he is venerated in various Christian traditions. St. Florian is associated with the city of Linz in Austria, where he is believed to have been a Roman officer who was executed for his faith. His legacy continues to inspire those in the firefighting profession, symbolizing bravery and protection against fire-related dangers.