northumbrian, adj. & n.
--adj. of or relating to ancient Northumbria (England north of the Humber) or modern Northumberland.
--n.
1 a native of ancient Northumbria or modern Northumberland.
2 the dialect of ancient Northumbria or modern Northumberland.
obs. Northumber, persons living beyond the Humber, f. OE Northhymbre