Kate Middleton's cancer diagnosis was just one challenge she and Prince William had to face together in recent years.

For Prince William and Princess Kate, they've not only been tested with multiple family health battles, but they've faced an unrelenting series of other personal and public challenges over the past five years.

All that has transpired “either crushes a marriage, or it brings them together.” When people think about five years ago in the royal family, they likely think of Prince Harry and Meghan Markle, who stepped away from life as working royals in 2020 and relocated from the U.