Alexander Severus' is full of controversy and contradictions. He came to the throne through the brutal murder of his cousin, Elagabalus, and was ultimately assassinated himself. The years between were filled with regular uprisings and rebellions, court intrigue (the Praetorian Guard slew their commander at the Emperor's feet) and foreign invasion. Yet the ancient sources generally present his reign as a golden age of just government, prosperity and religious tolerance Not yet fourteen when he became emperor, Alexander was dominated by his mother, Julia Mammaea and advisors like the historian, Cassius Dio. In the military field, he successfully checked the aggressive Sassanid Persians but some sources see his Persian campaign as a costly failure marked by mutiny and reverses that weakened the army. When Germanic and Sarmatian tribes crossed the Rhine and Danube frontiers in 234, Alexander took the field against them but when he attempted to negotiate to buy time, his soldiers perceived him as weak, assassinated him and replaced him with the soldier Maximinus Thrax. John McHugh re-assesses this fascinating emperor in detail.