Philip, 97, who is retired from public life and underwent a hip replacement operation in April, has been on frosty terms with Eugenie’s mother Sarah Ferguson, the Duchess of York, since she separated from Prince Andrew in 1992.
He did, however, make it for that other royal wedding of 2018 — that of Eugenie’s cousin Prince Harry and Meghan Markle. “He does what he wants,” says a well-placed insider in this week’s issue of PEOPLE. “He made a supreme effort for Harry. I would be very surprised if he did go, because he is so estranged from Fergie. I think he will decide at the 99th hour.”
Eugenie and Jack Brooksbank are to wed on October 12 at Windsor Castle’s St. George’s Chapel — the same venue where Harry and Meghan exchanged vows.
This article originally appeared on PEOPLE