They had eight children: As Lady Brabourne during her father's lifetime, her immediate family became closely involved in the consideration of a future consort for her first cousin once removed, Charles, Prince of Wales.

In early 1974, Lord Mountbatten began corresponding with the eldest son of Queen Elizabeth II and Prince Philip about a potential marriage to Lady Brabourne's daughter, Amanda.

[6] Charles wrote to Lady Brabourne (who was also his godmother), about his interest in her daughter, to which she replied approvingly, though suggesting that a courtship was premature.

In 1943, at age 19, she entered the Women's Royal Naval Service as a Signal Rating and served in Combined Operations bases in Britain, including HMS Tormentor.

Despite her succeeding to an earldom in her own right as Countess Mountbatten of Burma on the death of her father in 1979, she preferred that the officers and men of her regiment address her as Lady Patricia.

Her funeral service took place on 27 June 2017 at St Paul's Church, Knightsbridge, and was attended by the Queen Elizabeth II, Prince Philip, Duke of Edinburgh, and other senior members of the royal family.

Her casket was borne by a party of pall bearers from Princess Patricia's Canadian Light Infantry, who were in London on public duties.