Regency of Alexander
As a member of the Imperial Roman family, she watched closely the death of her cousin Caracalla and the ascent to power of her nephew Elagabalus, the oldest grandson of Julia Maesa and her choice to the throne. Eventually Elagabalus and his mother Julia Soaemias proved incompetent rulers and favour fell on Alexander, Julia's son. He became emperor in 222, following Elagabalus' murder by the Praetorian Guard. Julia and her mother became regents in the name of Alexander, then 14 years old. He never managed to escape her maternal domination, but at first Julia ruled very effectively. She reversed all Elagabulus' scandalous policies, chose 16 distinguished senators as advisers and relied heavily on the famous Lawyer Ulpian, who was also from Syria. Ulpian was made head of the Praetorian Guard. However, he was unable to control the Praetorians and was murdered by them in AD 228. Upon adulthood, Alexander confirmed his esteem for his mother and named her consors imperii (imperial consort). It was in this condition that she accompanied her son in his campaigns: a custom started with Julia Domna.
Meanwhile, Julia had become madly jealous of her son's wife, Barbia Orbiana, whom Alexander married in AD 225, and whose father had been made Caesar or co-ruler. Julia had Barbia thrown out of the palace and had her father executed.
Julia called on Origen, the Alexandrian Christian leader, to provide her with instruction in Christian doctrine.
Read more about this topic: Julia Avita Mamaea