1452. Leonardo da Vinci is born on 15th April.
1469. The artist is apprenticed to Andrea del Verrocchio.
1470/2. The Baptism of Christ by Verrocchio and Leonardo.
1472. The Madonna of the Carnation. (Accepted) (Leonardo enters the San Luca guild of painters)
1473/5. The Annunciation. (Accepted)
1476. The artist is anonymously accused of homosexual practices.
1478/80 Benois Madonna. Ginevra de’Benci. (Both accepted)
1482. Leonardo moves from Florence to Milan, he works as an engineer, sculptor and painter to Ludovico Sforza.
1480/82. St Jerome. (Accepted)
1481/82 Adoration of the Magi. (Accepted)
1483/85. The Virgin of the Rocks (Louvre version) (accepted)
1485. The Musician. (Generally accepted)
1487/1488. Leonardo works on a commission for an equestrian statue of Francesco Sforza. (Not completed)
1489/90. Lady with an Ermine. (Accepted)
1490. Madonna Litta. (A possible collaboration between Leonardo and others)
1490/95. La Belle Ferroniere. (Accepted,)
1495/99/1507/8. The Virgin of the Rocks (National Gallery London version) (Accepted with possible collaboration by other artists)
1495/97. The Last Supper. (Accepted)
1499. Leonardo leaves Milan travelling to Mantua and Venice.
1499/1500. He creates a cartoon portrait of Isabella d’ Este in Mantua (accepted) but does not appear to have completed any works in Venice.