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

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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. Public Domain Mark. Source: Wellcome Collection.