Princess Diana was remembered by her sons and close family in an intimate service at her family home on Saturday — the day that would have been her 56th birthday.

Her resting place on the island of the Oval Lake at Althorp House was re-dedicated in the presence of her sons Prince William and Prince Harry, along with Princess Kate and her brother Charles, 9th Earl Spencer.

William and Kate brought their children, nearly 4-year-old Prince George and 2-year-old Princess Charlotte, to the private service as well, which was led by Justin Welby, the Archbishop of Canterbury.

“The Duke and Duchess of Cambridge and Prince Harry will attend a private service to re-dedicate the grave of Diana, Princess of Wales at Althorp House on Saturday 1 July,” Kensington Palace said in a simple statement earlier this week. “The service, which will fall on what would have been The Princess’s birthday, will be conducted by The Archbishop of Canterbury and attended by her family.”