Dionysius the Areopagite was an Athenian judge at the Areopagus Court in Athens, who lived in the first century. A convert to Christianity, he is venerated as a saint by multiple denominations.
Mosaic of Dionysius in Hosios Loukas monastery
Dionysius the Areopagite with Thomas Aquinas, Madonna and the Child. Madonna and Child Enthroned between Angels and Saints by Domenico Ghirlandaio 1486.
Martyrdom of Saint Dionysios in the Menologion of Basil II (11th Century)
Διονυσίου του Αρεοπαγίτου, τα σωζόμενα πάντα, or Sancti Dionysii Areopagitæ, opera omnia quæ extant [All extant works of Dionysius the Areopagite] (Venice: Antonio Zatta, 1756)
Denis of Paris was a 3rd-century Christian martyr and saint. According to his hagiographies, he was bishop of Paris in the third century and, together with his companions Rusticus and Eleutherius, was
Saint Denis holding his head. Statue at the left portal of Notre Dame de Paris.
Beheading of Denis and of his companions, tympanum of the north portal of the Basilica of Saint-Denis
Late Gothic statue of Saint Denis, limestone, formerly polychromed (Musée de Cluny)
Last Communion and Martyrdom of Saint Denis, by Henri Bellechose, 1416, which shows the martyrdom of both Denis and his companions