Martin I of Sicily

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Martin I of Sicily (c. 1374/1376 — July 25, 1409), called "The Younger", was King of Sicily from 1390 to 1409.

Martin's father was the future King Martin I of Aragon, and his grandparents were King Peter IV of Aragon and Eleonor of Sicily. In 1389/1390/February, 1392 he married Mary of Sicily, born in 1362/1363. In 1392 he returned with Mary to Sicily with a military force and defeated a group of opposing barons. In 1394 the couple had their only son Peter, crown prince of Sicily, who died in 1400. He ruled Sicily jointly with Mary until her death at Lentini on May 25, 1401/1402. At that time, he repudiated the Treaty of 1372 and ruled Sicily alone. After his death in 1409 in Cagliari, Sardinia, his father, by then king of Aragon, ruled Sicily as Martin II.

After Mary's death Martin I the Younger married at Catania on May 21, 1402 by proxy and on December 26, 1402 in person Blanche of Navarre, who was heiress of the Evreux family and the future queen of Navarre, by whom he had an only son Martin in 1403, who died in Valencia in 1407. No offspring of his two marriages survived childhood; the only issue he left was a bastard son by Sicilian-born Tarsia Rizzari, Fadrique of Aragon, Count of Luna and Ejerica and Lord of Segorbe, born in 1400/1403, whom Martin II tried to make his successor in the Aragonese Empire. But the effort failed, and Fadrique was denied the succession by the Pact of Caspe. He married Yolande Louise (Violante Luisa) de Mur and died at Urena in 1438 without issue. He also left a bastard daughter by Sicilian-born Agathe de Pesce, named Violante of Aragon, who died c. 1428 and was married twice: firstly in 1405 as his second wife (some say she was his mistress) to Enrique Pérez de Guzmán, 2nd Conde de Niebla (c. 1380 – August 31, 1436), by whom she had an only daughter Beatriz de Guzmán married to Dom Diogo Henriques with female issue; and secondly to his cousin Martín de Guzmán, without issue.

Martin the Younger led the troops in the conquest of Sardinia in 1409, decisively defeating the ruler of Arborea at the Battle of Sanluri just before his own death.

Preceded by Mary

King of Sicily 1390 – 1409

Succeeded by Martin II