Bamburgh | Bamburgh Castle | Osulf II of Bamburgh | Bamburgh baronets |
De primo Saxonum adventu, an 11th- or 12th-century compilation from earlier sources, notes that after the death of Osulf, Northumbria was divided into two parts: Eadulf Evil-child receiving the lands between the Myreford (arguably the Firth of Forth) and the River Tees and Oslac receiving the lands between the Humber Estuary and the Tees.
On the other hand Oslac is also a genuine English name, and the common Os element Oslac's name shared with the name of Osulf of Bamburgh, previous ealdorman of York, points to a connection with the Bamburgh family of the English far north.