names in the historical Danelaw and elsewhere in Britain. Examples are numerous earthworks named Grimsdyke. Other British place names with the element Grim are explained as referring to Woðen/Oðin (e.g. Grimsbury, Grimspound, Grime's Graves, Grimsditch, Grimsworne), and Grimsby is likely to have the same derivation.

Grimsby is listed in the Domesday Book