Count László Széchenyi de Sárvár-Felsővidék (18 February 1879 – 5 July 1938) was an Austro Hungarian military officer, Imperial Chamberlain, diplomat and venture capitalist.

[1] The Count was born Széchenyi László Jenő Mária Henrik Simon on February 18, 1879 in Horpács, then a part of Austria-Hungary, a dual monarchy established in 1867.

He was a son of Count Imre Széchenyi de Sárvár-felsővidék, the former Austrian Minister at the Court of Berlin and his wife, Countess Alexandra Sztaray-Szirmay et Nagy-Mihály (1843–1914).

[4] His father owned thousands of acres divided into scores of farms and forest preserves on which the Széchenyis grew wheat, Turkish pepper, tobacco, hemp, and grapes.

Gladys grew up in the family home on Fifth Avenue in New York City, and their summer "cottage," The Breakers in Newport, Rhode Island.

[9] His widow died on 29 January 1965 in Washington, D.C.[24] Through his daughter Gladys, he was a grandfather of Christopher Denys Stormont Finch-Hatton, 16th Earl of Winchilsea (1936–1999), who is known for his work promoting of the interests of the displaced Sahrawi people.