Prince Philip, the Duke of Edinburgh, husband of Queen Elizabeth II, father of Prince Charles and patriarch of a turbulent royal family that he sought to ensure would not be Britain’s last is dead.

NYTimes reports that Prince Philip died on Friday at Windsor Castle in England at the age of 99.

His death was announced by Buckingham Palace, which said he passed away peacefully.

Philip had been hospitalized several times in recent years for various ailments, most recently in February, the palace said.

“It is with deep sorrow that Her Majesty The Queen announces the death of her beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh,” the statement said.

“His Royal Highness passed away peacefully this morning at Windsor Castle.

“The Royal Family join with people around the world in mourning his loss.”

The palace added that further announcements would be made “in due course”.