[2] The chiefs of Clan Kincaid are said to be descended from several families including the ancient Earls of Lennox, the Galbraiths of Buthernock, the Grahames and also the Comyn Lords of Badenoch.

[2] In 1238 an early reference to the name is found when Alexander II of Scotland granted the lands of Kincade to Maldouen, third Earl of Lennox.

[2] The Galbraith's main castle was originally at Craigmaddie, but when the line ended in three sisters the estate was separated.

[2] One of the sisters married a Logan in 1280 and they received the lands of Kyncade by a charter from the fourth Earl of Lennox.

[2] One member of the Kincaid family distinguished himself by gallant conduct against the English forces of Edward I of England and in 1296 successfully recaptured Edinburgh Castle.

[2] The Kincaid family increased their landholdings in the east of the country from the late sixteenth century onwards.

[2] They later also added the estate of Bantaskin near Falkirk, the Blackness Castle near Linlithgow and the fields of Warriston that is now a suburb of Edinburgh.

[2] During the Jacobite rising of 1745 four sons of Alexander Kincaid, who was Lord Provost of Edinburgh and the King's Printer, fought a rearguard action after the Battle of Culloden.

Alwyne Cecil Peareth Kincaid-Lennox's petition was granted and he was recognised as chief of the name of Kincaid by the Lord Lyon King of Arms on 1 July 1959.

She was twice married; first to Lieutenant-Commander Denis Arthur Hawker Hornell and secondly to William Henry Allen (Hal) Edghill.

The current style of the house was designed by architect David Hamilton for John Kincaid of that Ilk in 1812.

The last patients left the hospital in 2002,[12][13] and Lennox Castle remained empty until it was severely damaged by fire on 19 May 2008.