Saint Donatus of Muenstereifel was a 2nd-century Roman soldier and martyr who served as a bodyguard to Emperor Marcus Aurelius. Born in Rome to parents named Flaminia and Faustus, he was raised in the Christian faith. He rose through the ranks of the 12th Legion, known as the Thundering Legion, before being executed for his faith. His remains were originally interred in the Catacombs of Saint Agnes in Rome, but were later moved to the Rhineland in the 17th century.