She had supported the Queen for decades, most publicly during the 2012 Diamond Jubilee celebrations when she stepped in for Prince Philip, who was unable to attend as he was unwell.

       She died four days after Christmas Day, it was said.

       Her death comes just weeks after the passing of another devoted friend and former Mistress of the Robes, the Duchess of Grafton, Ann Fortune FitzRoy, at the age of 101. Lady Farnham was married to Barry Maxwell, the 12th Baron Farnham - a leading City banker and Irish peer who died in 2001.

       What is happening where you live? Find out by adding your postcode or visit InYourArea

       A royal source said: "It is very sad for the Queen. Everyone loved Lady Farnham, she was always so good humoured. She was also a very glamorous woman.

       "She was always very generous to new people joining the household.

       "It has not been a good year for the Queen - losing her husband and then the Duchess of Grafton and now Lady Farnham. They were dear friends who supported the Queen on official duties. Unfortunately a sad consequence of living a long life is that you have to say goodbye to a lot of people you care about."