[2] George Hay, 8th Earl of Kinnoull, bought the Brodsworth estate from Sir John Wentworth in 1713 and rebuilt the house in the Georgian style, but lost his money in the South Sea Bubble crash of 1720 and was obliged to take the position of Ambassador to the Ottoman Empire.

His second son Robert, later Archbishop of York, took up residence on the estate instead and made a number of improvements to the house and grounds.

On his death in 1777, the house was left empty, and, after his eldest son became the 10th Earl of Kinnoull in 1787, he sold the estate in 1790 to Peter Thellusson (1737–1797) of the Swiss banking family.

As these slave owners defaulted on debts, Thellusson amassed interests in Caribbean plantations and became a tobacco and sugar importer.

He wrote an unusual will, unsuccessfully challenged by his family in the Thellusson Will Case, whereby his fortune was put in trust to be untouched for three generations.

The other was Peter's great-grandson Charles Sabine Augustus Thellusson who, in 1859, inherited half the bequest plus the Brodsworth estate with its Georgian house.

[1] Designed in the Italianate style by Philip Wilkinson, the Hall is constructed in ashlar limestone, some quarried on the estate, with lead and slate roofs.