Nevada Stoody Hayes (21 October 1870 – 11 January 1941), sometimes called Nevada of Braganza, was an American socialite who became the wife of Infante Afonso of Braganza, Duke of Porto, whose nephew, Manuel II, was the last king of Portugal.
Nevada Barr, whose name is not a pseudonym (she was named for her state of origin, in 1952--talk about trend-setting parents!), is a mystery novelist best known for her Anna Pigeon mysteries.