The name Bann Court follows a pattern in this area of Lower Oldpark of naming streets after rivers — for example Foyle, Liffey, Shannon (Street/Court), Bandon, and Avoca. The River Bann is Northern Ireland’s longest river, rising in the Mourne Mountains, flowing as the Upper Bann into Lough Neagh and continuing as the Lower Bann to the Atlantic at the Barmouth near Portstewart.