Martyrdom of Saints John and Paul, Guercino, between 1630 and 1632

Date: between 1630 and 1632. Dimensions: height: 23.9 cm (9.4 in); width: 31 cm (12.2 in). Medium: pen and ink on paper. Collection: Courtauld Institute of Art. Guercino - Martirio dei Santi Giovanni e Paolo