Oliver Wallop, 8th Earl of Portsmouth

https://en.wikipedia.org/wiki/Oliver_Wallop,_8th_Earl_of_Portsmouth

Oliver Henry Wallop, 8th Earl of Portsmouth (13 January 1861 – 10 February 1943) was a British peer and also served in the Wyoming State Legislature in the United States.

Wallop had moved from England to the United States, and had been living the life of a rancher in Sheridan, Wyoming, at the time of the death in 1925 of his older brother, the 7th Earl. Known as O.H. Wallop, he had served two terms as a Republican in the Wyoming House of Representatives. Wallop, who had become a United States citizen in 1891, was allowed to take his seat in the House of Lords after renouncing American citizenship. Wallop died in Colorado Springs, Colorado after being ill for a year.

His grandson, Malcolm Wallop, also served in the Wyoming State Legislature, and three terms in the United States Senate.