Cawdor Castle is a castle in the parish of Cawdor in Nairnshire, Scotland. It is built around a 15th-century tower house, with substantial additions in later centuries. Originally a property of the Calder family, it passed to the Campbells in the 16th century. It remains in Campbell ownership, and is now home to the Dowager Countess Cawdor, stepmother of Colin Campbell, 7th Earl Cawdor. The castle is perhaps best known for its literary connection to William Shakespeare's tragedy Macbeth, in which the title character is made "Thane of Cawdor". However, the story is highly fictionalised, and the castle itself, which is never directly referred to in Macbeth, was built many years after the life of the 11th-century King Macbeth. The castle is a category A listed building, and the grounds are included in the Inventory of Gardens and Designed Landscapes in Scotland, the national listing of significant gardens. History The earliest documented date for the castle is 1454, the date a licence to fortify was granted to William Calder, 6th Thane of Cawdor (or Calder, as the name was originally spelled). However, some portions of the 15th-century tower house or keep may precede that date. Architectural historians have dated the style of stonework in the oldest portion of the castle to approximately 1380. One curious feature of the castle is that it was built around a small, living holly tree. Tradition states that a donkey, laden with gold, lay down to rest under this tree, which was then selected as the site of the castle. The remains of the tree may still be seen in the lowest level of the tower. Modern scientific testing has shown that the tree died in approximately 1372, lending credence to the earlier date of the castle's first construction. The iron yett (gate) here was brought from nearby Lochindorb Castle, which was dismantled by William around 1455, on the orders of King James II, after it had been forfeited by the Earl of Moray. The castle was expanded numerous times in the succeeding centuries. In 1510 the heiress of the Calders, Muriel, married Sir John Campbell of Muckairn, who set about extending the castle. Their children included Campbell, Katherine Campbell, Countess of Crawford. Further improvements were made by John Campbell, 3rd of Cawdor (c.1576 - c.1642), who purchased rich lands on Islay. By 1635 a garden had been added, and after the Restoration Sir Hugh