The famous Egyptian queen known for her relationships with Julius Caesar and Mark Antony is Cleopatra VII. Cleopatra ruled Egypt during the Ptolemaic period and is often remembered for her intelligence, political acumen, and charm. She initially aligned with Julius Caesar to solidify her power and later had a son with him, Caesarion. Following Caesar's assassination, she partnered with Mark Antony, leading to a significant political alliance against their common rival, Octavian. Their defeat in the Battle of Actium in 31 BC led to her and Antony's downfall. Cleopatra remains a significant figure in history and mythology.