Mark Antony (Marcus Antonius) was a loyal supporter and general of Julius Caesar. After Caesar's assassination, he formed the Second Triumvirate with Octavian and Lepidus, defeating Caesar's assassins at Philippi in 42 BC.
He took charge of the eastern provinces and began a famous political and romantic alliance with Cleopatra VII of Egypt. This relationship alienated him from Rome and his rival Octavian.
Tensions with Octavian escalated into civil war. Defeated at the Battle of Actium in 31 BC, Antony fled to Egypt and committed suicide as Octavian's forces closed in.