16 September – On this day

Flavius Valerius Severus Augustus (Severus II) was either executed or forced to commit suicide. He became Caesar of the western Empire on 1 May AD 305, after rising through the military ranks. After the death of Constantine I, Galerius promoted him to Augustus of the West in 306. On his return to Rome after trying to settle a rebellion his troops deserted him. Severus fled to Ravenna but was coaxed out of a seemingly safe position by promises of safety. Severus was imprisoned at Tres Tabernae before being executed or forced to commit suicide on 16 September.