James Middleton commemorated his and wife Alizée Thevenet’s first wedding anniversary with a touching tribute to Queen Elizabeth and Prince Philip. The Princess of Wales’ younger brother took to his Instagram on Sunday, Sept. 11, to share a photo of the late royal couple from their wedding day in 1947.

“Today is our 1st wedding anniversary however it doesn’t seem right to celebrate while mourning the loss of Queen Elizabeth II,” James captioned the image. “Instead I’m sharing a photo of the marriage of the Queen & the Duke of Edinburgh on their wedding 74 years ago.”

He added, “To my darling Alizee I look forward to sharing as many with you in our lifetime ❤️.”

James and Alizée tied the knot in the village of Bormes-les-Mimosas last year surrounded by family and friends. The Prince and Princess of Wales reportedly attended the wedding in France. James’ sister Catherine officially became the new Princess of Wales last week. King Charles III bestowed the titles of Prince and Princess of Wales on his son Prince William and daughter-in-law Catherine the day after Queen Elizabeth’s death.

Her Majesty died peacefully at Balmoral on Sept. 8. James paid tribute to the late monarch after her passing with photos of the Queen with her beloved dogs over the years. Alongside the pictures, he wrote: “Queen Elizabeth II, the epitome of steady grace, resolve and reassurance. Our constant in a world of change 🕊 Thank you for a lifetime of service & leadership.”