Location and coordinates are for the approximate centre of Cotmanhay within this administrative area. Geographic features and populated places may cross administrative borders.
Gazetteer of the British Isles (Edinburgh: Bartholomew, 1887). John Bartholomew
Cotmanhay, eccl. dist. and hamlet, Heanor and Ilkeston par., S. Derbyshire, pop. 3593. The hamlet is on border of co., 1½ mile N. of Ilkeston.