Saint Ambrose, Saint Gregory the Great, Saint Jerome and Saint Augustine of Hippo. Engraving by C. van Dalen after Sir P.P. Rubens.

Licence: Public Domain Mark

Credit: Saint Ambrose, Saint Gregory the Great, Saint Jerome and Saint Augustine of Hippo. Engraving by C. van Dalen after Sir P.P. Rubens. Wellcome Collection. Source: Wellcome Collection.