Political map of Europe & the Mediterranean 8 June 218 (Macrinus vs Elagabalus): In 217 the unstable Caracalla was assassinated at the behest of his successor Macrinus, but Macrinus found it harder to resolve the financial problems Caracalla had created. When, just a year later, Caracalla’s aunt Julia Maesa pushed her grandson, the 14-year-old sun god priest Elagabalus, as his true heir, many troops, angered by Macrinus’ attempts to reduce their pay, sided with the usurper. The rebels swiftly defeated Macrinus near Antioch (Battle of Antioch (218)) and Elagabalus became the new emperor.