Part of a small cluster of streets with geographical names from around Carlingford Lough, also including Carlingford Street, Greenore Street, Omeath Street and (on the other side of Woodstock Road) Newry Street.
Killowen is a village near Rostrevor on the north-east shore of Carlingford Lough.
“On application of the owners, your Committee have named the following new streets: One off Ormeau road, between Delhi street and the River, ‘Agra street’; one off Woodstock road, ‘Ardgowan street’; one off Newtownards road, ‘Austin street’; six off Woodstock road, ‘Ogilvie street’, ‘Killowen street’, ‘Greenore street’, ‘Omeath street’, ‘Ardenvohr street’, and ‘Carlingford street’. ” Minutes of the Town Improvement Committee, 28th July 1897.