The Medici Seal

Blurb

The Medici Seal is a young adult novel written by Theresa Breslin, published in 2006. Set among the cultural life and political intrigues of Renaissance Italy, it is the story of a boy who initially calls himself Matteo and his master Leonardo da Vinci.
It was shortlisted for the 2007 Booktrust Teenage Prize and longlisted for the 2007 Carnegie Medal.