Template:On this day - August 9

Roque Sáenz Peña.

• 865 – Near Miranda de Ebro (present-day Spain) the Battle of the Morcuera is fought, in which Muhammad I of Córdoba defeats Rodrigo of Castile.
• 1002 – Death of Almanzor, Andalusi military leader and politician, chancellor of the Caliphate of Córdoba (b. 938).
• 1484 – Birth of Luisa de Medrano, Spanish poet and philosopher (d. 1527).
• 1540 – In the Cauca Valley (Governorate of Popayán, present-day Colombia), Jorge Robledo founds the settlement of Cartago.
• 1801 – Death of María Gertrudis Hore, Spanish poet (b. 1742).
• 1851 – Birth of José Francisco Godoy, Mexican writer (d. 1951).
• 1858 – Birth of Agustina Andrade, Argentine writer (d. 1891).
• 1863 – Birth of the Count of Romanones, President of the Senate, President of the Congress of Deputies and three times President of the Council of Ministers during the reign of Alfonso XIII of Spain (d. 1950).
• 1880 – Birth of Ramón Pérez de Ayala, Spanish writer (d. 1962).
• 1884 – San José (Costa Rica) becomes the first city in Hispanic America to have electric lighting.
• 1914 – Death of Roque Sáenz Peña, lawyer, politician and President of the Argentine Nation.
• 1924 – Birth of Rogers Becerra Casanovas, Bolivian musician (d. 2005).
• 1952 – The city of La Plata in Argentina is renamed Ciudad Eva Perón, by a decree of the executive power to honor Evita after her death.
• 2010 – Death of Fernando Fernández, Spanish cartoonist, illustrator and painter (b. 1940).