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The Queen is affectionately known as "cabbage" by her husband. No one knows why for certain, but The Sunday Times surmised in 2006 that it might have originated with the French phrase "mon petit chou," which translates to both "my little cabbage" and "my little pastry puff."

Elizabeth and Philip's royal love story has stood the test of the time. They've been married for a head-spinning 73 years! In 2007, Her Majesty became the first British monarch to celebrate her diamond wedding anniversary when they reached the milestone of 60 years of marriage. And for more fun facts about the royals, check out 30 Fascinating Facts about British Royal Weddings.

In 1946, the press spotted Philip helping the princess put on her coat at her cousin's wedding and noticed the connection between them. The couple was secretly engaged at the time, but the Palace waited three years, until Elizabeth was 21, to make the official announcement.

Princess Elizabeth was just a pre-teen when she met the dashing 18-year-old Philip Mountbatten, who was then a cadet in the British navy. The two corresponded for several years while he was away at sea. By the time Elizabeth was 17, she knew he was the man she wanted to marry. And for a deeper look at Prince Philip's time in the spotlight, These Are Prince Philip's Most Controversial Moments

Yes, the Queen and Prince Philip have the same great-great-grandparents: Queen Victoria and Prince Albert, who were first cousins themselves. This makes them third cousins

Franklin Delano Roosevelt was able to keep the extent to which his polio physically affected him relatively hidden from the public in a way that would be impossible in today's world.

Whether or not Ronald Reagan was impacted by symptoms of dementia while still in office—he was officially diagnosed with Alzheimer's disease five years after the end of his presidency—remains a subject of much debate among historians. What is confirmed, however, is the fact that Reagan had his share of health problems while he was Commander in Chief. According to the History channel, in 1985 Reagan had multiple polyps removed from his colon—one of which was found to be cancerous. And two years later, he had basal cell epithelioma skin cancer removed from his nose.

Shortly after delivering the Gettysburg Address in the afternoon of November 19, 1863, Abraham Lincoln started coming down with what was eventually determined to be smallpox. While Lincoln was sick for about a month, his doctors tried to tell him his case was a mild one, which was far from the truth. In reality, the disease nearly took his life

Over the course of his life, George Washington fought off a laundry lists of serious illnesses that includes tuberculosis, malaria, and smallpox, PBS reported in 2011. While serving as president, Washington had a tumor on his leg and, in 1790, came down with severe cases of influenza and pneumonia that almost cost him his hearing. To the surprise of those around him, Washington recovered, but eventually died in 1799 from a throat infection. He was 67 years old. And to learn more about the presidential chain of command, check out these Surprising Facts About the Presidential Line of Succession

Woodrow Wilson was in office during the Spanish flu epidemic that began in 1918—the outbreak that the COVID-19 pandemic is often compared to. And like our current president, Wilson contracted the disease, which had already wreaked havoc on the United States.