On this day in AD306 the emperor Constantius I died in York
July 25, 2015
His troops, rather than await a new leader to be appointed for them, hailed the emperor’s son Constantine as Augustus but it was not until 324 that he would gain control over the entire empire.
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?