Salomon, King of Brittany was a ninth-century monarch who held various titles, including count of Rennes and Nantes and duke of Brittany. Born in Armorica around 900, he rose to prominence as a powerful aristocrat before eventually seizing the Breton throne in 857. Throughout his reign, he navigated complex political relationships with Frankish rulers, occasionally employing Viking mercenaries to further his interests. He died in 874 following an assassination, and he is remembered as a saint in the Catholic tradition.