オスティアーポルトゥス出土の後期ローマのカット・ガラス浅碗断片 : 初期キリスト教的事例３点を中心に

The three shallow glass bowl fragments with Christian cut decoration from Ostia-Portus may be now identified as products from a Roman workshop dating from the last decades of 4th century, as proposed by recent contributions by L. Saguì. Fragments which are similar in terms of the glass (colour and weathering), vessel shape and size, as well as the cutting technique, have been excavated in large quantities in Rome. The variety of decorative subjects on the fragments demonstrate that the output of the workshop was not exclusively Christian. S. Nagel’s distribution map of the workshop’s finds demonstrates that this glassware reached the far north and west of the Empire, either via trade, or as travellers’ souvenirs.
This article provides an overview of glassware and its production in Rome and Ostia-Portus, based on the latest research by L. Saguì and B. Lepri, then summarises the characteristics of both Roman workshops’ products in the late imperial period, as they propose. Finally, three shallow bowls with cut Christian decoration from the workshop at Ostia-Portus are discussed, and through iconographic interpretation and comparable examples, the relationship between the Roman church and Ostia-Portus, and the rise of martyr veneration of that time are considered.