At the time of Prince Philip's death, and prior to his lengthy statement, the Duke and Duchess of Sussex initially took down their Archewell Foundation's website to replace it with a message mourning Harry's grandfather, who died peacefully at Windsor Castle, aged 99.
"In Loving Memory of His Royal Highness The Duke of Edinburgh, 1921-2021," the dedication says. "Thank you for your service...you will be greatly missed."
Harry, who is currently living in California, is likely to return to the U.K. for the first time in over a year to attend the funeral. According to People, Harry is predicted to quarantine for several days and be tested before joining his family at St. George's Chapel.
It remains unclear if Meghan, who is currently expecting the couple's second child, a baby girl, will join her husband or stay in the U.S., with their son Archie Harrison.
Prince Harry has always spoken of the close bond he shared with his grandfather, and the pair were often seen smiling and joking with one another at royal events. Philip also played a crucial role in Prince William and Prince Harry's lives after the death of their mother, Princess Diana, in 1997.
Appearing on The Late Late Show last month with James Cordon, Harry spoke of how he keeps in touch with his grandparents, telling the host a funny story about Philip.
"My grandfather instead of pressing 'leave meeting' he just goes 'doof,'" he told the host while gesturing how his grandfather slams a laptop closed. "So, we're like 'Ok, bye'."
And although he retired from public service in 2017, the Duke of Edinburgh was in attendance for many important family moments. He attended Harry and Meghan's royal wedding in May 2018 shortly after undergoing hip replacement surgery, and was also present for a historic family photo after the birth of the couple's first child, Archie, in 2019.