Dor

According to the Old English Dictionary:

es;

Dor

m. DORE, Derbyshire; loci nomen in agro Derbiensi :-- Ecgbryht Wesseaxna cyning lǽdde fierd to Dore wið Norþan Hymbre Egbert king of the West Saxons led an army to Dore against the Northumbrians, Chr. 827; Erl. 64, 7. dor