![Guercino - Saint Peter Freed by an Angel [c.1622]](http://farm9.staticflickr.com/8597/15753076807_bc8201df73_o.jpg)
Guercino (Cento, February 8, 1591 - Bologna, December 22, 1666) was an Italian Baroque painter. Guercino was remarkable for the extreme rapidity of his executions: he completed no fewer than 106 large altarpieces for churches, and his other paintings amount to about 144. He was also a prolific draftsman. His production includes many drawings, usually in ink, washed ink, or red chalk. Most of them were made as preparatory studies for his paintings, but he also drew landscapes, genre subjects, and caricatures for his own enjoyment.
[Museo Nacional del Prado, Madrid - Oil on canvas, 105 x 136 cm]