Three of Prince Philip's German family will attend his funeral and are currently isolating at a home in Ascot.
Despite that side of the Duke of Edinburgh's family being absent at his wedding due to post-war nervousness at Buckingham Palace, he was adamant they should be represented at his funeral.
Two great-nephews and a cousin are part of a bubble at a home in Berkshire belonging to a mutual friend, after being quietly flown to the UK last weekend.
They are Bernhard, Hereditary Prince of Baden, Prince Donatus, Landgrave of Hesse, and Prince Philipp of Hohenlohe-Langenburg.
Like Prince Harry, provided final Covid tests come back negative, they will be permitted to join the Queen among the service's 30 mourners at St George's Chapel on Saturday afternoon.
"It really is an incredible honour and we are all extremely touched and privileged to be included on behalf of the wider family," said Prince Philipp, 51, in a statement.
His grandmother, Princess Margarita, was the Duke's elder sister and he often visited the family home in Langenburg Castle in southern Germany.
Prince Bernhard, 50, is a grandson of the Duke's second sister, Theodora, and Prince Donatus, 54, is the head of the House of Hesse, into which Philip's younger sisters, Cecile and Sophie, married.
Speaking of the Duke, Prince Philipp said: "It was such a joy having a conversation with him. His memory was extraordinary.
"He could remember playing hide-and-seek in the castle when he was a boy, and he always enjoyed talking to the local people.
"He could switch from German to English and back, whether he was talking about Winston Churchill or the local wildlife."
It was always at this time of year, the Duke would invite many of his extended family for one of the highlights of the royal calendar — the Royal Windsor Horse Show.
While Ascot Week was when the Queen filled the castle with her friends from the world of racing, then the horse show was the Duke's week, with scores of Langenburgs, Badens, Hesses and Hanovers filling Windsor's guest rooms.
Philip himself was German through his mother’s side, as Princess Alice of Battenberg was a Hessian Princess.
All four of Philip’s elder sisters married into German royal and aristocratic families, particularly as they had all moved there following the family’s exile from Greece.
During his military service during World War Two, the Duke found himself fighting on the opposing side to his brothers-in-law.
And despite having grown up in England and schooled in Scotland, much effort was made by The Firm to remove any remaining 'foreign-ness' when Philip married the future Queen.
He was naturalised as a British citizen ahead of the wedding, with his Greek and Danish titles being removed.
But having been partly raised by his older sisters during a chaotic childhood, the German side of his family was always close to the Duke's heart.