Located to the north-west of the village of Auchtertool, Hallyards Castle (Scots: Hall yairds "the yards at the hall") is reputed to have been a hunting seat of Malcolm Canmore. With the establishment of the Roman Church, Halyards became the local residence of the Bishops of Dunkeld; it remained so until the first lay proprietor took possession in 1539.
The influence that Halyards had on the district cannot be overstated. When Sir James Kirkcaldy was proprietor the castle witnessed dramatic events; according to John Knox it was visited by James V just before his death, and the murder of Cardinal Beaton was possibly discussed within its walls. During the Reformation Crisis there was fighting between French troops and the Scottish Lords of the Congregation at Halyards. William Kirkcaldy fought for the reformers.
According to Knox, after French troops blew up the house, Mary of Guise declared, "Where is now John Knox's God? My God is now stronger than his, yea, even in Fife." In February 1560 it was reported the castle was 'clean overthrown.' Kirkcaldy took his revenge on a Savoyard captain called Sebastian and his 50 French troops.
In later years Halyards passed to John Boswell of Balmuto, William Forbes of Craigievar, members of the Skene family then the Earls of Moray. The castle’s name was changed to Camilla, popularly held to be in honour of a countess who bore that name, though no so-named Countess of Moray is recorded. Camilla is the name more commonly known in Auchtertool today.
With the Earls of Moray living at a distance, Halyards eventually fell into disuse. In 1819 the castle was revisited by a member of the Skene family, who found it in a dilapidated state. The great house was largely demolished in 1847. The remains can be found on farmland to the north-west of the village.
- "Fife Place-name Data :: Hallyards". Fife-placenames.glasgow.ac.uk. Retrieved 2016-03-29.
- Knox, John, "from History of the Reformation, book 2,".
- Knox, John, History of the Reformation, book 3, various editions e.g., Lennox, Cuthbert, ed., (1905), 187
- Bain, Joseph, ed., Calendar of State Papers Scotland, vol. 1 (1898), 310, Randolph to Sadler & Croft.
- Maxwell, John, Historical memoirs of the reign of Mary Queen of Scots, Abbotsford Club, (1836), 47
- "Hallyards Castle | Castle in Auchtertool, Fife | Scottish castles | Stravaiging around Scotland". Stravaiging.com. 2014-06-20. Retrieved 2016-03-29.
- "The gazetteer of Scotland - Google Books". Books.google.co.uk. Retrieved 2016-03-29.
- "Fife Place-name Data :: Camilla". Fife-placenames.glasgow.ac.uk. Retrieved 2016-03-29.