The subsidiary title of Viscount Linley was also granted, and it became the title of Margaret and Antony’s only son until he too became the Earl of Snowdon when Antony died in 2017.
After her marriage, Margaret retained her style of Her Royal Highness Princess Margaret.
But she also became known as the Countess of Snowdon, a title which is technically of lower rank than the title of Duchess.
Debretts explain: “Earl is the third rank of the Peerage, standing above the ranks of viscount and baron, but below duke and marquess.”
