Prince Philip, husband of Britain's Queen Elizabeth, has died at age 99, the royal family said Friday.
"It is with deep sorrow that Her Majesty The Queen has announced the death of her beloved husband, His Royal Highness The Prince Philip, Duke of Edinburgh," Buckingham Palace said in a statement. "His Royal Highness passed away peacefully this morning at Windsor Castle."
The prince married Princess Elizabeth in 1947, five years before she became queen. They had four children, eight grandchildren and 10 great-grandchildren.
Earlier this year, he spent a month in the hospital, where he underwent treatment for an infection and a procedure for a heart condition. He was discharged on March 16 and spent his final weeks in Windsor Castle, just outside London.
"Like the expert carriage driver that he was, he helped to steer the royal family and the monarchy so that it remains an institution indisputably vital to the balance and happiness of our national life," British Prime Minister Boris Johnson said in a press conference. "He was an environmentalist, and a champion of the natural world long before it was fashionable."