What is Luís, Prince Imperial of Brazil?
{{Infobox royalty | name = Prince Luís | image = Luís, Príncipe Imperial do Brasil, 1909.jpg | image_size = | caption = | title = [[Prince Imperial of Brazil]] (in pretense) | spouse = [[Princess Maria di Grazia of Bourbon-Two Sicilies|Princess Maria Pia of Bourbon-Two Sicilies]] | issue = [[Pedro Henrique of Orléans-Braganza|Prince Pedro Henrique]]<br />[[Luiz Gastão of Orléans-Braganza|Prince Luís Gastão]]<br />[[Pia Maria of Orléans-Braganza|Princess Pia Maria]] | full name = {{lang-pt|Luís Maria Filipe Pedro de Alcântara Gastão Miguel Rafael Gonzaga de Orléans e Bragança}} | house = [[House of Orléans-Braganza|Orléans-Braganza]] | father = [[Prince Gaston, Count of Eu]] | mother = [[Isabel, Princess Imperial of Brazil]] | birth_date = {{birth date|1878|1|26|df=y}} | birth_place = [[Petrópolis]], [[Empire of Brazil]] | death_date = {{death date and age|1920|3|26|1878|1|26|df=yes}} | death_place = [[Cannes]], [[French Third Republic|France]] | burial_place = [[Chapelle royale de Dreux|Royal Chapel]], [[Dreux]], France | religion = [[Roman Catholicism]] }} '''Luís, Prince Imperial of Brazil''' (26 January 1878 – 26 March 1920), was a [[Prince Imperial of Brazil|Prince]] of the [[Empire of Brazil]] and heir to the Brazilian throne until his death. He was born in Brazil during his grandfather's reign as the second son of [[Prince Gaston, Count of Eu]], and [[Isabel, Princess Imperial of Brazil]]. He was exiled along with his family as the result of the 1889 [[coup d'état]] that resulted in the formation of the [[República Velha|republic]]. In 1908, the year he married, his older brother [[Pedro de Alcântara, Prince of Grão-Pará|Pedro]] renounced his claim to succeed his mother in her claim to the imperial throne, leaving ''[[w:Don (honorific)|Dom]]'' Luís as her heir. In this role he worked with monarchists in Brazil in several attempts to restore the monarchy. At the outbreak of [[World War I]] he enlisted as an officer with the [[Britis