Prince Sixtus of Bourbon-Parma attempted came from which of the two countries that made up The Powers' alliance in 1879?
Prince Sixtus of Bourbon-Parma Prince Sixtus of Bourbon-Parma (1 August 1886 – 14 March 1934) was a son of Robert I, the last reigning Duke of Parma. He was a prince of the Parmesan branch of the royal House of Bourbon; a Belgian officer in World War I; and the central figure in the Sixtus Affair, an attempt to negotiate a treaty to end Austria-Hungary's participation in the Great War separate from its Central Powers allies. He also wrote a number of books.
Infante Sebastian of Portugal and Spain "Dom" Sebastian Gabriel of Bourbon and Braganza, (Rio de Janeiro, 4 November 1811 – Pau, 14 February 1875) Infante of Portugal and Spain, was a royal of the 19th century, progenitor of the ducal lines of Hernani, Ansola, Dúrcal and Marchena, and Carlist army commander in the First Carlist War.