Louis I (Ludovico I or Lodovico I in Italian) (Geneva, February 21, 1402/1413 – Lyon, January 29 1465) was Duke of Savoy from 1440 until his death.
He married at Chambery on November 1 1433 or February 12 1434 Anne of Cyprus (ca September 24 1415 (or 1419) – Geneva, November 11 1462) (although Anne was born on September 24, the year she was born is uncertain, might be 1415 or 1419), a Princess and an heiress of Cyprus and Jerusalem (she was the secondary heiress all her lifetime, as her niece Queen Charlotte of Cyprus outlived her) and a daughter of King Janus of Cyprus. They had 19 children, 5 of whom died young:
- Amadeus (1435-1472)
- Maria (1436-1437)
- Louis of Savoy, Count of Geneva (1436-1482), married Annabella of Scotland, married Queen Charlotte of Cyprus.
- Philip (1438-1497)
- Margaret (1439-1483), married in December 1458 Giovanni IV Paleologo (1413–1464), Marquis of Montferrat.
- Giano, Count of Geneva (1440-1491)
- Pietro, Bishop of Geneva (1440-1458)
- Janus, Count of Faucigny, Governor of Nice. (1440-1491)
- Charlotte (1441-1483), married Louis XI of France
- Aimone (1442-1443)
- Giacomo d. 1445
- Agnese (1445-1508)
- Giovanni Ludovico, Bishop of Geneva (1447-1482)
- Maria (1448-1475)
- Bona (1449-1503), married Galeazzo Maria Sforza, duke of Milan
- Giacomo, Count of Romont, lord of Vaud (1450-1486)
- Anne (1452-1452)
- Francesco, Archbishop of Auch and Bishop of Geneva (1454-1490)
- Giovanna d. young.
In 1453 he received, from Margaret de Charny, the Shroud of Turin, which would be property of the house of Savoy until 1946, at the end of the Kingdom of Italy. The Shroud of Turin was bequeathed to the Holy See in 1983. He may also have been one of Leonardo da Vinci's later patrons.