Prince Harry's memoir sheds light on bust-ups among British royals

FILE PHOTO: LONDON, ENGLAND - SEPTEMBER 19: Prince William, Prince of Wales and Prince Harry, Duke of Sussex follow behind The Queen's funeral cortege borne on the State Gun Carriage of the Royal Navy as it leaves Westminster Abbey on September 19, 2022 in London, England. Elizabeth Alexandra Mary Windsor was born in Bruton Street, Mayfair, London on 21 April 1926. She married Prince Philip in 1947 and ascended the throne of the United Kingdom and Commonwealth on 6 February 1952 after the death of her Father, King George VI. Queen Elizabeth II died at Balmoral Castle in Scotland on September 8, 2022, and is succeeded by her eldest son, King Charles III. Jeff Spicer/Pool via REUTERS

LONDON/MADRID (Reuters) -Britain's Prince Harry says his older brother and heir to the throne Prince William knocked him to the floor during a 2019 argument over Harry's American wife, Meghan, in his much-awaited memoir, which went on sale days early in Spain on Thursday.

In his book "Spare", Harry also discloses how the brothers, the sons of King Charles, had begged their father not to marry his second wife, Camilla, now Queen Consort, and that he had taken cocaine as a teenager.