Template:On this day - April 18

Ramón Pignatelli

• 850 – Death of Perfectus of Córdoba, Spanish monk and saint, beheaded by the Muslim authorities of the Emirate of Córdoba for asserting that Muhammad was a false prophet.
• 1213 – Death of Marie of Montpellier, wife of Peter II of Aragon (b. 1180).
• 1469 – Birth of Francis I of Foix, King of Navarre (d. 1483).
• 1188 – The Cortes of the Kingdom of León begin, "the oldest documentary evidence of the European parliamentary system", which precedes the famous English Magna Carta of 1215 by 27 years.
• 1491 – From Córdoba (in present-day Spain), King Ferdinand the Catholic sets out on the march to conquer Granada, still in the hands of the Muslims.
• 1610 – In Spain, King Philip III signs the order for the expulsion of the Moriscos from the Kingdom of Aragon, although it was not made public until 29 May, so that its preparations could be carried out in secret.
• 1649 – In Puebla de Zaragoza (New Spain, present-day Mexico), the Metropolitan Cathedral of the Immaculate Conception is consecrated.
• 1734 – Birth of Ramón Pignatelli, Spanish engineer and man of the Enlightenment (d. 1793).
• 1738 – In Madrid (Spain), the Royal Academy of History is founded.
• 1770 – Death of José Benegasi y Luján, Spanish writer (b. 1707).
• 1819 – Death of Juan Fernández de Rojas, Spanish writer, historian and humorist (b. 1750).
• 1823 – Death of Fernando Camborda, Spanish writer (b. 1769).
• 1835 – In Peru, the town of Chiclayo is raised to the rank of capital of the Lambayeque region.
• 1847 – The first April Fair of Seville opens in Spain.
• 1847 – In Mexico, during the U.S. Intervention War, the armies of Mexico and the United States clash at the Battle of Cerro Gordo and the Battle of Tuxpan.
• 1902 – Quetzaltenango, the second city of Guatemala, is destroyed by an earthquake.
• 1905 – Death of Juan Valera, Spanish novelist, politician and diplomat (b. 1824).
• 1916 – In the settlement of Puerto de Varas (Chihuahua), the Battle of Puerto de Varas takes place, in which the troops of Francisco Villa defeat the troops of the U.S. Army.
• 1991 – Death of Gabriel Celaya, Spanish poet and writer (b. 1911).
• 1999 – Death of Vicente Escrivá, Spanish film, theater and television director and screenwriter (b. 1913).
• 2018 – In Nicaragua, protests begin against the government of Daniel Ortega over the reforms to the social security system.