The Master of Light and Shadow: The Life of Guercino Born Giovanni Francesco Barbieri around 1591 in the serene town of Sassuolo, Italy, the artist who would become known to history as Guercino emerged as one of the most luminous figures of the Bolognese Baroque. His name, a nickname meaning "the squinting one," perhaps alludes to the intense, focused gaze with which he approached his canvas, a gaze that captured the very essence of h…