North·um·bri·an 
(nôr-thŭmbrē-ən)
(nôr-thŭmbrē-ən)adj.
1. Relating to Northumbria or its Old English dialect.
2. Relating to the former or present-day county of Northumberland in northeast England.
n.
1. A native or inhabitant of Northumbria.
2. A native or inhabitant of Northumberland.
3. The Old English dialect of Northumbria.