Meghan Markleand Prince Harry‘s son, born on May 6, had his christening on Saturday atQueen Elizabeth’s private chapel at Windsor Castle. The new parents chose the location because they “wanted an intimate, peaceful settingin a place with such a special connection to Her Majesty,” a royal source told PEOPLE. And the Duke and Duchess of Sussex did not have to travel far from their Frogmore Cottage home, also on the grounds of Windsor Castle.

As seen in a family portrait shared on Harry and Meghan’s Instagram account,Prince Charlesand wife Camila, Duchess of Cornwall were also in attendance were Princess Diana’s sisters Lady Sarah McCorquodale and Lady Jane Fellowes.

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“This is a beautiful milestone and they are excited to share it as a family first and then with the world,” said the source of Harry and Meghan, who wore a white Dior dress to her son’s christening.

“The Duke and Duchess of Sussex are so happy to share the joy of this day with members of the public who have been incredibly supportive since the birth of their son. They thank you for your kindness in welcoming their first born and celebrating this special moment,” they captioned their post on Instagram Saturday. “Their Royal Highnesses feel fortunate to have enjoyed this day with family and the godparents of Archie.”

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The larger St. George’s Chapel at Windsor Castle was the site of Meghan and Harry’s May 2018 wedding.Prince Harrywas also christened there in 1984.

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The Duke and Duchess of Sussex with their baby son

The timing follows closely to the christenings ofKate MiddletonandPrince William‘s three children — Archie’s big cousins.

Prince George’s christeningoccurred in late October(more than three months after he was born) at the Chapel Royal in London’s St. James’s Palace.Princess Charlotte‘s was held two months after her birth at the St. Mary Magdalene Church in Norfolk,on the grounds of the Queen’s Sandringham estate— and very close to William and Kate’s country home, Anmer Hall.

Prince Louis was christenedat the same place as his older brother in July 2018, about three months after his world debut.

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Prince Louis christening

Meghan and Harryshared a recent glimpse of their son on Father’s Day, posting an Instagram photo of Archie peering at the camera from the arms ofPrince Harry.

source: people.com