Aug 6 Saint Sixtus II, bishop of Rome (257-58), beheaded under orders of Emperor Valerian Aug 10 Saint Lawrence, Christian martyr, burned to death Sep 14 Thascius C Cyprian, Saint/Bishop of Carthage, dies at 58 257 AD Famous Deaths by Year 270 AD Famous People by Cause of Death Assassination Drug Overdose Gunshot Wound Murder Plane Crash Suicide