[4] Lord Winchilsea was also a partner in securities firm of William P. Bonbright & Co. of London and New York.

[5] On 8 June 1910, Viscount Maidstone married American heiress Margaretta Armstrong Drexel (1885–1952) at St Margaret's, Westminster by the Bishop of London.

[6] Margaretta, who had been presented at court in 1908 by Princess Louise Margaret of Prussia, the Duchess of Connaught, was the daughter of Margarita (née Armstrong) and Anthony Joseph Drexel Jr., and the granddaughter of Anthony Joseph Drexel, member of a wealthy Philadelphia banking dynasty.

In 1926, Guy (Toby) and Margaretta decided to purchase their new country home, then named Buckfield House, at Sherfield-on-Loddon in Hampshire.

The house was luxuriously renovated and contained many amenities fit for aristocrats and social elites.

[15] Finch-Hatton died in London on 10 February 1939,[4] at the age of 53 and was buried at Ewerby in Lincolnshire.