The <a href="https://en.wikipedia.org/wiki/Battle_of_Alfarrobeira" id="mwSA" rel="mw:WikiLink" title="Battle of Alfarrobeira">Battle of Alfarrobeira</a> is fought, establishing the <a href="https://en.wikipedia.org/wiki/House_of_Braganza" id="mwSQ" rel="mw:WikiLink" title="House of Braganza">House of Braganza</a> as a principal royal family of Portugal.