Louis I d'Orléans, duc de Longueville

Louis I d'Orléans, Duke of Longueville (1480 - Beaugency, 1 August 1516), was a French aristocrat and general, Grand Chamberlain of France and governor of the Provence.

He was the second son of François I, Duke of Longueville and Agnes of Savoy. He succeeded his elder brother François II, when he died childless in 1512. He became Duke of Longueville, Count of Montgommery, Count of Tancarville, Prince of Châlet-Aillon, Marquis of Rothelin and viscount of Abberville.

He was taken prisoner by the English at the battle of the Spurs when he attempted to bring relief to the siege of Thérouanne on 16 August 1513, and sent to Catherine of Aragon. At first she lodged him in the Tower of London while she dealt with the Scottish invasion and the battle of Flodden. Longueville was treated very well in England. He began a relationship with Jane Popincourt and was used as a supplementary ambassador in arranging the marriage of Mary Tudor and Louis XII of France, as part of a peace treaty with France.

Louis married in 1504, Jeanne of Hochberg (-1543), daughter of Philip of Hochberg. They had four children:
 * Claude (1508 - November 9, 1524), Duke of Longueville and peer of France.
 * Louis II (1510 - June 9, 1537), married Marie of Lorraine (Mary of Guise), succeeded his brother.
 * François (1513-1548), marquis of Rothelin, married Jacqueline de Rohan, parents of Francoise d'Orléans.
 * Charlotte (1512-1549), Mademoiselle de Longueville prior to her marriage to Philippe, Duke of Nemours.