[Leo III.], proclaimed Charlemagne emperor of the West in 800; driven in 799 from the papal chair by a conspiracy, he was reinstated by Charlemagne, who next year visited the city and was crowned by him emperor.
[Leo IX.], saint; was elected at the Diet of Worms in 1048, welcomed at Rome, and applied himself zealously to the reform of Church discipline; being defeated in the field by Guiscard, suffered a 10 years' imprisonment, fell ill and died.
[Leo X.], Giovanni de' Medici, son of Lorenzo the Magnificent, sovereign of Florence; was distinguished as a patron of art, science, and letters, and as occupant of the chair of St. Peter at the outbreak of the Reformation, and as by his issue of indulgences for the replenishment of his treasure provoking the movement and rousing the ire of Luther, which set the rest of Europe on fire.
[Leo XIII.], 257th Pope of Rome, born at Carpineto; distinguished at college in mathematics, physics, and philosophy; took holy orders in 1837, was nuncio to Belgium in 1843, became bishop of Perugia in 1846, cardinal 1853, and Pope in 1878; holds to his rights as Pope both secular and spiritual; believes in the Catholic Church as the only regenerator of society, and hails every show of encroach it makes on the domain of Protestantism as promise of its universal restoration; b. 1810.
[Leon], an ancient kingdom in the NE. of Spain, united with Castile in 1230, with a capital of the same name 256 m. NW. of Madrid. Also the name of a city in Nicaragua and another in Mexico.
[Leonardo da Vinci], celebrated painter and sculptor of the Florentine school, born at Vinci in the Val d'Arno; showed early a wonderful aptitude for art; studied under Andrea del Verrocchio, but so surpassed him in his work as to drive him to renounce the painter's art; his great work, executed by him at Milan, was the famous picture of the "Last Supper," which he painted in oil about 1497 on the wall of the refectory of the Dominican convent of the Madonna delle Grazie; it perished from the dampness of the wall almost as soon as it was finished, but happily copies were taken of it before decay had ruined it; besides, Leonardo did in 1503 at Florence the famous cartoon of the Battle of the Standard; he was a man of imposing personal appearance, of very wide range of ability, and distinguished himself in engineering as well as art; he wrote a "Treatise on Painting," which has been widely translated (1452-1519).
[Leonidas], king of Sparta from 491 to 480 B.C.; opposed Xerxes, the Persian, who threatened Greece with a large army, and kept him at bay at the Pass of Thermopylæ with 300 Spartans and 5000 auxiliaries till he was betrayed by [Ephialtes] (q. v.), when he and his 300 threw themselves valiantly on the large host, and perished fighting to the last man.
[Leonids], meteors which descend in showers during November in certain years, their chief centre being the constellation Leo.
[Leopardi, Giacomo], modern Italian poet, born near Ancona; a precocious genius; an omnivorous reader as a boy, and devoted to literature; of a weakly constitution, he became a confirmed invalid, and died suddenly; had sceptical leanings; wrote lyrics inspired by a certain sombre melancholy (1788-1837).
[Leopold I.], king of the Belgians, son of the Duke of Saxe-Coburg; in his youth served in the Russian army; visited England in 1815, and married Princess Charlotte, who died two years later; he declined the throne of Greece in 1830, but accepted that of the Belgians in 1831, and proved a wise, firm, constitutional sovereign; in 1832 he married the French princess Louise; he was succeeded by his son Leopold II. (1790-1865).