Queen Elizabeth II was known to have a close relationship with her sister Princess Margaret, until her death at the age of 71 in 2002. Princess Margaret married Antony Armstrong-Jones, a photographer, at Westminster Abbey in 1960 and usually the Queen gives members of the Royal Family a new royal title following their wedding days.
In recent years, many of the male members of the Royal Family have received a dukedom when they tied the knot.
Prince William became the Duke of Cambridge when he married Kate Middleton in 2011.
Prince Harry was also given the title of Duke of Sussex when he married Meghan Markle in 2018.
So when Princess Margaret married, the Queen created the title of Earl of Snowdon for Margaret’s new husband in 1961.
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Princess Margaret title: Why did the Queen not give her sister a Duchess title? (Image: GETTY)
Princess Margaret title: Princess Margaret was the Queen's only sister (Image: GETTY)

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.”
Princess Margaret title: Princess Margaret married Antony Armstrong-Jones in 1960 (Image: GETTY)
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