Alexander the Great was lucky to have very supportive women at his side throughout his life. Historical records show that he was well-protected by them and that they were his secret source of power as well.
The most important woman in Alexander's life was his mother Olympias, but Barsine and Roxana also seem to have had key influences on him. Some of the Macedonian king's shorter romances also affected his life positively. It is worth wondering if he would have been such a successful person if he had not had the strong women who took care of him at his side.
Olympias Mother, Protector, and Best Friend
Olympias was Alexander's mother, protector, and best friend. She was a woman who fought like a lion to protect her son and even sacrificed her husband, king Philip II of Macedonia, to support Alexander.
Her birth name was Myrtle, and she was a daughter of Neoptolemus, the king of Epirus. Legend says that she had relatives who fought in the Trojan War.

A statue of Alexander and Olympias, Schnbrunn, Vienna. ( CC BY SA 3.0 )
Olympias wasn't lucky in her marriage. When she couldn't have more children, Phillip became interested in other women. He didn't accept monogamy, and Olympias suffered. She promised herself that she would do her best to not allow any of Phillip's other sons to become king just her own. She became Alexander's most demanding teacher and supporter. She hired an army of people who earned lots of money for protecting the boy who would become the king of Macedonia.
After Alexander's death, Olympias did her best to be the same source of support and strength for his wife and son. She hoped that her grandson would be able to continue the reign of Alexander, but unfortunately things did not go as she planned
Roxana the Beloved
Some historians believe that Roxana was Alexander's greatest weakness. He lost his heart to her when he was 28, and with this relationship he also lost interest in other women. She was described by the writers who saw her as one of the most beautiful women in all of Asia. Her Afghan name was Roshanak, meaning ''little star''. The ancient historians say that she was Persian.

Alexander the Great and Roxana, in a 1756 painting by Italian Baroque artist Pietro Rotari. ( Public Domain )
Roxana and Alexander also married for political reasons. After conquering many lands in Asia, Alexander wanted to strengthen the bonds with the new parts of his Empire. The marriage took place in spring or in August of 327 BC. According to ancient sources, Roxana became Alexander's greatest passion. He was so charmed by her beauty and wisdom that he spent more time with her than his soldiers wanted him to.
When Alexander died in 323 BC, Roxana's position was still strong, but she already knew the cruel ways of royal courts. She decided to kill two of Alexander's other women, hoping to protect herself and her unborn son. She gave birth to a boy named Alexander (Alexander IV), six months after the death of Alexander the Great.