Codex Madrid (Leonardo)

[1] The two codices were brought to Spain by Pompeo Leoni, a sculptor in the court of Philip II.

After various changes of ownership, they were transferred to the monastic library of El Escorial and finally to the Biblioteca Real, where they remained unknown for 252 years.

[citation needed] Topics discussed include mechanics, statics, geometry and construction of fortifications.

Over fifty years later Pompeo Leoni, a sculptor in the service of Philip II, purchased them from Melzi's son Orazio and brought them to Spain.

On a visit to Madrid in 1623 the future Charles I of England became interested in the manuscripts, but Juan de Espina refused to sell them.