On this day in AD 311, the Roman emperor, Diocletian, died at his palace in Split
December 3, 2015
We are told that it ended in insanity
On this day in AD284 Diocletian became emperor
November 20, 2015
Before becoming emperor, Diocles (for this seems to have been his birth name) had been a successful leader in the military field.
On this day in 302 Diocletian issued his edict on Manicheanism
March 31, 2015
But who were the Manicheans? And what did Diocletian think of them?