Michelangelo began to show an interest in art and drawing by the age of ten, and became an apprentice by age 12. When Michelangelo was 13 he was set to be an artist. He became a pupil of the great sculptor, Donatello.  His father soon recognized the boy's intelligence and While he studied the principles of Latin, Michelangelo made friends with a student, Francesco Granacci six years older than him, who was learning the art of painting in Ghirlandaio's studio and who encouraged Michelangelo to follow his own artistic vocation.  When Michelangelo turned 13-years old he shocked and enraged his father when told that he had agreed to apprentice  in the workshop of the painter Domenico Ghirlandaio. After about one year of learning the art of fresco, Michelangelo went on to study at the sculpture school in the Medici gardens and shortly thereafter was invited into the household of Lorenzo de’Medici, the Magnificent. There he had an opportunity to converse with the younger Medici, two of whom later became popes (Leo X and Clement VII). He also became acquainted with such humanists as Marsilo Ficino and the poet Angelo Poliziano, frequent visitors to the Medici court. It is certain even this early in Michelangelo's training that his skill was evident or he would not have been invited into the powerful Medici family's patronage.