His first wife was Julia Cornelia Paula; his third wife was Annia Faustina, a descendant of Marcus Aurelius; but it was his second wife, Julia Severa, who scandalized the people, as she was a Vestal Virgin when he married her.  
His mother's lover Gallys conspired to raise him to power by secretly conducting him to the camp of the Third Legion, which proclaimed him emperor.  Later, that Legion grew dissatisfied with him and tried to make its commander Berus emperor, but the coup failed, as did another led by Seleucus.  His first wife was Julia Cornelia Paula; his third wife was Annia Faustina, a descendant of Marcus Aurelius; but it was his second wife, Julia Severa, who scandalized the people, as she was a Vestal Virgin when he married her.  After succeeding Macrinus, he stayed at Antioch for months before travelling to Rome, where he attempted to institute a monotheistic religion based on the Syrian sun god whose priest he was.  FTP, name this last of the Antonine emperors, who was born Varius Avitus Bassianus and was succeeded in 222 by Alexander Severus.
His mother's lover Gallys conspired to raise him to power by secretly conducting him to the camp of the Third Legion, which proclaimed him emperor.  
Elagabalus or Heliogabalus