Meet Princess Margaret's grandchildren - all about her three grandsons and granddaughter

From a heartthrob in the Royal Marines to an Oxford student, here's everything about the Countess of Snowdon's grandchildren…

Meet King Charles' cousin Lady Sarah Chatto and her two sons

Lady Sarah is the daughter of the late Princess Margaret

King Charles's cousin Lady Sarah Chatto celebrates special family occasion

Princess Margaret's daughter, Lady Sarah Chatto, is mother to Samuel and Arthur Chatto

The Queen's great nephew opens up about overcoming huge challenge in rare video

Arthur Chatto discussed one of his biggest achievements

Princess Margaret's grandson lands personal trainer job

The 21-year-old is 26th in line to the throne

Major celebrations for the British royal family!

Congratulations to Princess Margaret's grandson, Arthur Chatto

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