As reported by The Mirror, the King and Princess Kate also aren’t the only royals to have been treated at the hospital before. Prince Phillip and Princess Margaret are also believed to have been patients.

It was not the week’s end that King Charles, 76, was anticipating—the monarch was unexpectedly hospitalized on Thursday due to side effects from his cancer treatment. He was quickly released, with a royal source saying that this was “the most minor bump in the road that’s very much heading in the right direction,

The Princess Royal and the King spent time together at a royal reception a few days before his sudden hospitalization