The name Grim goes back to the Anglo-Saxons. He is synonymous with the pagan god Odin. See also Grimsby, Grim's Dyke (for the Antonine Wall ), Grim's Ditch an earthwork, Grimspound in Devon, Grims Lake Mire ( a stone box in the Grims lake mud ), Grimsbury place in Oxfordshire, Grimsthorpe Castle ( Grims village), Graemsay island of Orkney, Grimes Graves flint mines, Grimsetter ( Grims seat) of Orkney and Shetland, Grimshader ( Grims seat) on Lewis and Harris, as well as several places called Grimston. Grim's Grave is a Bronze Age stone box (also kistvaen ) in Dartmoor. The name means Grims Island.
The main towns on Grimsay are Baymore ( Bagh Mòr ) and Kallin ( Ceallan ). The principal activity consists today in the lobster. Previously, the shipbuilding was important. The island is particularly well-preserved prehistoric through the Wheelhouse Bagh nam Feadag and Dun Ban, a "Atlantic Roundhouse " of particular interest.