The Queen reportedly gave Lady Gabriella's mother a nickname after she boasted about her 'royal blood'.
Lady Gabriella Windsor today tied the knot with her partner Thomas Kingston at St George's Chapel - the same venue where Prince Harry and Meghan Markle had their wedding almost a year ago.
Queen Elizabeth and Prince Philip attended the royal wedding celebrations along with the Duke of Sussex.
The Duchess of Sussex and her new baby Archie Harrison Mountbatten-Windsor were not seen at the Windsor Castle ceremony.
Prince Philip joins the Queen for Lady Gabriella Windsor's wedding to Thomas Kingston
Lady Gabriella Windsor is the daughter of the Queen's cousin Prince Michael of Kent and is 52nd in line to the succession of the British throne.
Her mother, Princess Michael of Kent, was born Marie-Christine von Reibnitz and is of German, Austrian and Hungarian descent.
Princess Michael of Kent was also an interior designer and author.
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It is said she has been called 'the most controversial royal family member' for her family history, according to Town and Country magazine.
In a magazine interview in 2000, the princess complained about the laws of succession as old-fashioned and discriminatory as it forbid a Roman Catholic acceding to the throne, the Daily Express reports.
She also said she has more royal blood than anyone who has married into the Royal Family since Prince Philip married the Queen in 1947.
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Lord Mountbatten is reportedly said to have passed the thoughts on to the Queen, who said: "Well Dickie, she sounds a bit too grand for us."
And Her Majesty is later said to have dubbed Princess Michael 'Our Val' - with a reference to the warrior-like Valkyries of Norse mythology, it is reported.
Valkyries are, sometimes, referred to in mythology as the daughters of royalty.
The Queen and the Duke of Edinburgh travelled by car to the St George's Chapel today and were welcomed by the Dean of Windsor the Right Rev David Conner, who conducted the ceremony.
The 93-year-old had a beaming smile as she arrived for the third royal wedding at the same chapel within 12 months.
