The writer found constant inspiration from his hometown of Hannibal and the people he met along the way.

Many believe the Celtic hero was a real person, while others think his origin story is just a legendary tale that has evolved over time.

Putting their differences aside, the politicians worked together on the defense team for Levi Weeks, who was accused of murdering Elma Sands in 1799.

The actor was beloved by millions, but he had to live a double life, concealing his sexuality to secure his career.

The pair's contentious relationship began in the early days of American politics and ended in a duel that took Hamilton's life.

From “Honest Abe” and “Tricky Dick” to the “Great Sphinx," these monikers revealed what the people really thought about these United States leaders.

Loveless since the start of their arranged union, the Russian rulers were ultimately torn apart by a coup that brought Catherine to the throne.

After the end of World War I, the collection writers and critics met at New York City’s Algonquin Hotel for a “10-year lunch” that epitomized the glamour and excitement of the decade.

As the second World War raged, then-Princess Elizabeth rallied to the cause and enlisted in the military, helping boost the morale of the British people.

One of the most famous figures in medical history, the nurse's groundbreaking achievements in handwashing, hygiene and sanitation helped revolutionize medicine.

For centuries, generations of royals have endured many ups and downs with their children.

The Italian dictator described "The Cardinal's Mistress" as “a novel for seamstresses and scandal.”

The writer helped the former president develop his best-selling memoirs before Grant's 1885 death.

The French Revolution tore the queen apart from her two surviving offspring.

Many believe the former British king lived an erratic existence due to ongoing, and sometimes undiscovered, health issues.

The musician's fluctuating financial status led many to believe he died a pauper.

'Ever thine. Ever mine. Ever ours.' Two centuries later, historians still haven't agreed on the identity of the woman who inspired the composer's famed lines.

Theories suggest the writer did not compose his famous works like 'Hamlet' and 'Julius Caesar.'

Having a friendly relationship with Adolf Hitler, many speculated that the Duke and Duchess of Windsor were involved in a plot to overthrow the British crown during World War II.

Stemming from her own difficult childhood, the British queen and her nine offspring experienced tension and dysfunction from the moment they were born.

After Lee's 'To Kill a Mockingbird' became a best-seller, Capote competed to keep up, eventually putting a wedge between the writers.

The accused killer began living lavishly, only to have the residents of Fall River, including her sister, ice her out.

The 39th president and former first lady have been a couple for more than 70 years.

Branded a "sick comic," the stand-up pushed boundaries with his foul-mouthed routines, which led to his 1964 arrest.