Roman Herculian guard Adrian of Nicomedia, who had converted to Christianity after being impressed with the faith of Christians that he had been torturing, was martyred. Jovians and Herculians: The Jovians and Herculians were the senior palatine imperial guard units under the rule of Roman Emperor Diocletian. They continued in existence thereafter as senior units in the field armies of the Western and Eastern Roman Empires. March 4, 306. Wiki link