Leonardo Da Vinci, 1452 to 1519, is best remembered today as an artist, especially for his paintings "The Last Supper" and "Mona Lisa", but he was just as much a scientist as an artist.  His scientific achievements include inventing the ball bearing and scissors.  He conceptualized many others including the tank and helicopter.  One reason not very much of his art has survived is because he loved to experiment with new materials and paint formulas, many of which were disasters.  
    In his later years he spent much of his time living in the Belvedere in the Vatican in Rome, where Rafael and Michaelangelo were often found as well.
    We know he was a religious person from his paintings of the Last Supper, The Madonna with a carnation, the Virgin and Child with St. Anne and the Baptism of Christ.
    Like most of his contemporaries, Da Vinci was Catholic.  He did have one belief that I think is not shared by Catholics.  He supposedly believed that the soul depended on the body for it's existence, not the other way around, and the soul would cease to function, possibly die, when the body died.  Certainly not what us spiritual folks believe.