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John I, Duke of Lorraine

John I
Duke of Lorraine
Effigie Jean Ier de Lorraine.jpg
Effigy of John I (Iean I) in Nancy
Born February 1346 (1346-02)
Died 23 September 1390(1390-09-23) (aged 44)
Paris
Spouse Sophie of Württemberg
Father Rudolph, Duke of Lorraine
Mother Mary of Blois

John I (February 1346 – 23 September 1390) was the Duke of Lorraine from 1346 to his death. As an infant of six months, he succeeded his father, Rudolph, who was killed in the Battle of Crécy. His mother was Mary, daughter of Guy I of Blois.

During his long minority, the regency was in the hands of his mother and Eberhard III of Württemberg. In December 1353, John did homage for the duchy to Charles IV, Holy Roman Emperor, who made him lieutenant-general of the Empire in the Moselle country.

John participated in the Drang nach Osten and its related crusades at the sides of the Teutonic Knights against Lithuania in 1356 and again in 1365.

He was facing west when, on 19 September 1356, he aided John II of France in the Battle of Poitiers, as his father had at Crécy, and where the French chivalry was mowed down by English longbowmen as before. He survived, however, unlike his father, to fight again, on the side of the Dauphin Charles in putting down the Parisian rebellion of Étienne Marcel. He attended Charles' coronation on 19 May 1364 in Rheims, strengthening the ties to France which had steadily been building in Lorraine for the past century.

He entered the War of the Breton Succession, as had his father, to aid his uncle Charles of Blois against John of Montfort. At the Battle of Auray on 29 September 1364 with John as undisputed duke and Charles dead on the field. John and Bertrand du Guesclin were both taken prisoner.


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