Gilbertfield Castle is within the former barony of Drumsagard, which was a possession of the Hamiltons. The castle was built in the early 17th century, and the date 1607 is displayed on a heraldic panel above the door. The castle was later lived in, around the turn of the 18th century, by William Hamilton of Gilbertfield (1665-1751), a retired soldier and writer.
Gilbertfield is a well-planned L-plan tower house. The stair tower, which projects to the north, was large enough to accommodate a series of rooms as well as a square turnpike stair.
The basement level was vaulted, and contained cellars and a kitchen, which had a large fireplace and oven. A service stair connected the basement with the hall above. The hall itself had a smaller fireplace, as well as large windows with gunloops in between. Above the hall were two further floors, each with three rooms; two in the main block, and one in the wing. At the highest level, the garret, two round turrets projected at the south-east and north-west corners. There was no parapet.
The castle is now a neglected ruin, the east wall having collapsed in the 1950s. Only the corbelling of the north-west turret remains.which fell down in the late 1960s. It is now deemed extremely dangerous as a lot of the brick work has fallen each year. The turret fell in the 1970s.
References:Dryburgh Abbey on the banks of the River Tweed in the Scottish Borders was founded in 1150 in an agreement between Hugh de Morville, Constable of Scotland, and the Premonstratensian canons regular from Alnwick Abbey in Northumberland. The arrival of the canons along with their first abbot, Roger, took place in 1152.
It was burned by English troops in 1322, after which it was restored only to be again burned by Richard II in 1385, but it flourished in the fifteenth century. It was finally destroyed in 1544, briefly surviving until the Scottish Reformation, when it was given to the Earl of Mar by James VI of Scotland. It is now a designated scheduled monument and the surrounding landscape is included in the Inventory of Gardens and Designed Landscapes in Scotland.
David Erskine, 11th Earl of Buchan bought the land in 1786. Sir Walter Scott and Douglas Haig are buried in its grounds.