The Bernician arms were fictional but inspired by Bede's brief description of a flag used on the tomb of St Oswald in the 7th century.
Northumberland | Flag of the United States | Duke of Northumberland | flag | Anti-Flag | Northumberland County, Pennsylvania | Northumberland County | Flag of France | Hugh Percy, 2nd Duke of Northumberland | Hugh Percy, 1st Duke of Northumberland | Flag of Canada | Morpeth, Northumberland | Blyth, Northumberland | Ralph Percy, 12th Duke of Northumberland | Raising the Flag on Iwo Jima | High Sheriff of Northumberland | Northumberland County, New Brunswick | Flag of Mexico | Flag of Ireland | Ellington, Northumberland | Warkworth, Northumberland | The Red Flag | Ridley Hall, Northumberland | Palestinian flag | John Dudley, 1st Duke of Northumberland | Henry Percy, 6th Earl of Northumberland | Henry Percy, 1st Earl of Northumberland | Flag semaphore | Flag of Turkey | Flag of Indonesia |