In Roman mythology, Portunes was a god of keys and doos and livestock. He later became associated with Palaemon and became primarily a god of ports and harbors. He protected the warehouses where grain was stored.
He had a temple of the Forum Boarium[?]. His festival, on August 17, was the Portunalia[?]. On this day, keys were thrown into a fire for good luck. His attribute was a key.