The Marriage Home of Annie Laurie (the heroine of 'the world's greatest love-song') who married Alexander Fergusson, 14th Laird of Craigdarroch, on 29 August 1709, and lived there for 33 years.
The story goes that his wife, Elizabeth, refused to believe her husband was dead and pined her days away waiting for his return, and subsequently haunted the saddle right up until 1920 when the ghost was laid by a Jesuit with Bell, Book and Candle.
Their son James, Chamberlain to the 3rd Duke of Queensberry, lived all his life at Drumlanrig Castle and was there when 'Bonnie Prince Charlie' came with his Highland Army in December 1745.
At Craigdarroch, the Fergussons and staff wisely decided to flee the house when they were requested to provide hospitality to the pretender.
The actual whistle is an heirloom, also at Caprington Castle Alexander's son, Robert, 17th Laird, was perhaps the most distinguished member of the family.
His grandson, Robert, died in 1904, leaving no heir - for the first time in 600 years - but twin daughters, the elder of whom, Ella, married William Cunninghame, 14th Laird of Caprington, descendant of the Earls of Glencairn, in 1918, and their elder son Robert inherited the castle and property.
During the 19th century various alterations and additions were made - the Oriel window in the drawing-room; the Chapel, built in 1889 of oak and stone from the estate; and later the billiard room wing, replacing former conservatories, and rebuilt in 1932 as the present study.
During the late war (1939–1945) the house was allocated to a special unit of the Norwegian Army since when it has been lived in for short periods only until the present occupation.