Singer Annie Lennox's royal link to Balmoral
5 September 2012 Last updated at 06:13 BST
Singer Annie Lennox has visited the ballroom at Balmoral castle where her grandfather, William Ferguson, was invited to dance by the Queen Mother at a staff ball.
William Ferguson worked as a gamekeeper on the estate in the early 1900s, when King George V was on the throne.
Annie Lennox's grandmother, Dora Jean Paton, who also worked at Balmoral in the dairy, was not invited to the celebration but managed to view the proceedings from a balcony.
Find out more in Who Do You Think You Are on Wednesday 5 September at 21:00 BST on BBC One.