Gregor Reisch

Margarita Philosophica. Title page, 1504 Gregor Reisch

Margarita Philosophica. Geometry, 1504 Gregor Reisch

Margarita Philosophica. Anatomy, 1504 Gregor Reisch

Thunderbolt or lightning, 1508. Anonymous

Pope Gregory XV Guercino

Portrait of Hugo Grotius or Hugo de Groot Rienk Jelgerhuis

H. Gregory of Nyssa, Church Father Zacharias Chatelain II

H. Gregory of Nyssa, church father François Halma

Bust of Pope Gregory XIV Sebastiano Torrigiani

Mass of Saint Gregory Anonymous

The Mass of Saint Gregory Israhel van Meckenem

Portrait of Godard van Reede, Lord of Nederhorst, Plenipotentiary of the Province of Utrecht in the Peace Negotiations at Münster Gerard ter Borch II

H. Gregory of Nazianzus the Younger, Church Father Zacharias Chatelain II

Portrait of L. G. Pareau, professor in the Faculty of Theology at the University of Groningen Anonymous

Reinwardt's Trogon Anonymous

Self-portrait Johan Gregor van der Schardt

Gregor Cazique W.H. Lizars

Gregor Mendel Austrian School

The Mass of Saint Gregory, 1511 Albrecht Dürer

Portrait Gregoire XVI Paul Delaroche

Mass of Saint Gregory Anonymous

Gregory VII. Anonymous

The Mass of Saint Gregory the Great, c. 1500 Anonymous

near Gmunden Austria, Baldi & Würthle, Gregor Baldi Carl Friedrich Würthle

Galeischip rescues shipwrecked Jacob Houbraken

Portrait of Rutger Schutte Pieter Frederik de la Croix

Grazing bull Pieter Gerardus van Os

Portrait of Anna-Gratia Asser Eduard Isaac Asser

Allegory welcoming Konigsmarck Gerrit Gerritsz van Fenaem

Portrait of P.C. Plugge, professor in the Faculty of Medicine at the University of Groningen Johannes Hinderikus Egenberger

Podiceps californicus, California Grebe George Suckley

Friedhof St. Peter, Baldi & Würthle, Gregor Baldi Carl Friedrich Würthle

Pope Gregory XV Guercino

Risen at Dawn - Gretchen Discovering Faust's Jewels , 1868 Dante Gabriel Charles Rossetti

Dom Gregoire Tarrisse, superieur general de la Congregation de Saint-Maur Jean Morin

Saint Gregory the Great Pedro Berruguete