sentences:  The existence of a market place to the east of the junction is suggested by the modern street name of Cornmarket.The southwestern approaches of Áth Cliath may have been protected by a ditch, which is mentioned in two 13th century documents.In addition to the urban settlement at Áth Cliath, the early inhabitants of Dublin may also have constructed a ringfort, or "ráth", on the present site of Dublin Castle.