In 1547, during the war now known as the Rough Wooing, Dunglass was captured by the forces of the Duke of Somerset from George Douglas of Pittendreich, and was fortified and garrisoned by the English.

[10] In October 1595 Christian Douglas, Lady Home moved her best household goods from Dunglass to Fife, sparking rumours of a marital separation.

[12] He alarmed the English garrison by coming to hunt near Berwick-upon-Tweed, staying a night the house of the laird of 'Beelleys' (Billie Castle), six miles from Berwick, and then returning to Dunglass.

[13] The castle was rebuilt, in an enlarged and improved form, and gave accommodation on 5 April 1603 to King James VI, and all his retinue, when on his journey to London to take up the English throne.

An English page, according to Scotstarvet, vexed by a taunt against his countrymen, thrust a red-hot iron into a powder barrel, and himself was killed, with the Earl, his half-brother, Richard, and many others.

He named thirty nine dead including five women, and John White, an English plasterer working for Lady Home.

In the Spring of 1788, the geologist Sir James Hall together with John Playfair and James Hutton set off from Dunglass Burn in a boat heading east along the coast looking for evidence to support Hutton's theory that rock formations were laid down in an unending cycle over immense periods of time.

They found examples of Hutton's Unconformity at several places, particularly an outcrop at Siccar Point sketched by Sir James Hall.