AARON and JULIUS, Saints, were brothers who suffered martyrdom together, during the persecution under the emperor Diocletian, in the year 303, about the same time with St Alban the first martyr of Britain. We are not told what their British names were, it being usual with the Christian Britons, at the time of baptism, to take new names from the Greek, Latin, or Hebrew. Nor have we any certainty as to the particulars of their death; only that they suffered the most cruel torments. Two churches were dedicated to the brothers, in which their bodies were interred, at Caerleon, the ancient metropolis of Wales.

or Harun, Al Raschid, a celebrated caliph, or Mahometan sovereign of the Saracen empire; whose history is given under the article BAGDAD.