After his father's death, Lorenzo de' Medici takes control--Golden Age of Florence

Excerpts from Books and Wikipedia

"By the time of his death, Florence had seen a magnificent efflorescence of artistic production, owing partly to Lorenzo's patronage of scholars, assembled in his Platonic Academy, and artists, including Botticelli and Leonardo da Vinci. The young Michelangelo lived in Lorenzo's palace for several years and was treated as a member of the family." [1001 Days]