Grimm (or The Grimm) is a former island in the Alster river at Hamburg, Germany, east of Cremon. Today there is a street in the old town, the road is probably on the island. Adolf III, Count of Schauenburg and Holstein had brought settlers from Westphalia to colonise the island. Its shore was built up after three floods from 1216 to 1219 and the island reclaimed. Up to 1300, the island was outside the city walls. In 1246 Grimm was absorbed by the city of Hamburg, and together with Cremon formed the parish of the newly built St. Catherine's Church.