Angela Hitler was the Führer's favorite sister who remained loyal to him even after he began a romantic relationship with Angela's daughter, Geli Raubal.

Known as Mehmed the Conqueror, Ottoman Sultan Mehmed II was just 21 years old when he took control of Constantinople and defeated the Byzantine Empire in 1453.

Nearly 200 years before Marie Curie won her Nobel Prize, Laura Bassi was born. Already a genius by age 13, Bassi grew up to be one of the greatest minds during the Age of Enlightenment.

Rarely-seen photos reveal a 30-foot-long black streak on the hull of the Titanic — days before the doomed ship set sail in 1912.

When Charles Millar died childless in 1926, he bequeathed his fortune to whichever woman could bear the most children in a 10-year span. What followed was a baby boom the likes of which Canada had never seen.

England's army of archers and men-at-arms killed somewhere between 4,000 and 10,000 French soldiers at the Battle of Agincourt, after rain and heavy armor forced the French to literally sink into the battlefield.

After a miserable childhood, Catherine of Valois married King Henry V of England and secured her place in history — but she lived in controversy after his untimely death.

Contrary to what Shakespeare and Netflix's The King would have you believe, King Henry V of England wasn't a wayward youth reluctant to lead, and he didn't go to war with France over a bunch of tennis balls.

Roza Shanina racked up 59 Nazi kills in just 10 months on the Eastern Front — and her diary captured it all.

Through her sharp treatises and philosophical writings, the self-educated Mary Astell would galvanize the Suffrage movement.