Giovanni di Bonino d'Assisi
Son of Bonino d' Assisi, one of the earliest glass painters in Italy. After 1325 he made many of the windows of the cathedral of Orvieto under the supervision of the architect Lorenzo Maitani. He was assisted by Andrea di Mino da Siena, Vitaluccio Luti, Tino d' Angelo d' Assisi and Tino di Biagio. Translucent alabaster was used with the glass in the windows at Orvieto. They have been much restored.