Earlier this month was National Sisters Day, which got me thinking about famous sibling duos. I thought it would be fun to share a list of the most famous of these sister pairings, but to be fair, there are so many famous pairs of sisters out there that it would be impossible to list them all. That’s why I’ve decided to leave out most of the contemporary examples you’re probably already familiar with, like Paris and Nikki Hilton and Venus and Serena Williams. I’ve also left out all of the popular sister singing groups from the last hundred years because there are so darn many of them between the Pointer Sisters, The Andrews Sisters and the gals from Heart.
That being said, here are some sisters who impacted history.

These not-so-attractive ladies are probably some of the earliest examples of famous sister groups, even if they aren’t exactly real. The Graeae were three ancient goddesses from Greek mythology who shared one eye and one tooth amongst the group. While they were actually archaic goddesses, when they interacted with humans, they usually took the form of old witches.
Perseus stole the eye of the witches when they were passing it amongst themselves and used it to force the Graeae to tell him where the three objects he needed to kill Medusa were hidden. Thus, the Graeae were instrumental in the killing of Medusa, who was one of their sisters. Even if these siblings aren’t real, the story has been so long-lasting that it’s hard to imagine it not having any impact on European history to some extent.

Around the same time that tales of Jesus were starting to be spread through the Middle East, two Vietnamese sisters were kicking butt, leading a revolt against the Chinese oppression of their country.
It all started when Trung Trac fell in love and married a man named Thi Sach. The Chinese rulers of Vietnam were making assimilation into their way of life mandatory and when Thi Sach took a stand against the repression of his culture, he was executed. His death was supposed to be a warning against all those who would consider rebelling, but instead it spurred his wife and sister-in-law, Trung Nhi, to take up his cause and fight against the Chinese.
The two sisters were raised learning martial arts and studying the art of warfare, so when it was time to start a rebellion, they were ready. In 39 AD, the two women repelled a small Chinese unit from their village and started to assemble a large army of rebels –mostly women according to popular legends. Within a few months, they already had taken back over 60 citadels from the Chinese and had liberated the kingdom of Nam Viet. The two were named as queens of their free country and they were able to keep the territory free from the Chinese for over two years.
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The admission standards for the US service academies are incredibly demanding, to say nothing of the task of graduating. But success runs in the Robillard family. The four children of the family, who form two sets of twins, are all graduates of the US Air Force Academy in Colorado Springs, Colorado:
As twins, and soon-to-be 2nd Lieutenants, Alicia and Amanda Robillard graduate today, the Robillard’s makes history as the first family to graduate four sisters from the Academy.
“As anyone who attended the academy can attest to, there is just that language and shared experience that all grads have in common, and being able to share that with all my sisters has really kept our bond strong,” said Lauren Robillard, Class of 2007 and the eldest sister of the family. “I would even venture to say that by having all attended the academy, we are closer than we otherwise would have been.”
Link via The Mary Sue | Photo: USAF Academy
What’s the secret to happiness? According to a study by the University of Ulster, the answer is: having sisters!
Lead researcher Professor Tony Cassidy said: "Sisters appear to encourage more open communication and cohesion in families.
"However, brothers seemed to have the alternative effect. Emotional expression is fundamental to good psychological health and having sisters promotes this in families."
He said many of the participants had been brought up in families where parents had split and the impact of sisters was even more marked in these circumstances.
"I think these findings could be used by people offering support to families and children during distressing times. We may have to think carefully about the way we deal with families with lots of boys."
