https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13974236Edit ImageSaveSaveEditCropCustom TextSaint Gregory the Great wearing papal dress is standing by the Tiber; Castel Sant'Angelo and Saint Peter's in Rome in the background. Engraving by A. Hogenberg after D. Teniers, 16--.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 897 x 1200 px | 300 dpiLarge JPEG 2292 x 3067 px | 300 dpiFree DownloadSaint Gregory the Great wearing papal dress is standing by the Tiber; Castel Sant'Angelo and Saint Peter's in Rome in the background. Engraving by A. Hogenberg after D. Teniers, 16--.More