Bremen is an unincorporated town in Cullman County, Alabama, United States. The Bremen community was founded with the name Empire in 1860. In order to prevent confusion with Empire in Walker County, the name was changed in 1879 by the town's first postmaster, James Macentepe. The name was chosen to honor the city of Bremen, Ger…Bremen is an unincorporated town in Cullman County, Alabama, United States. The Bremen community was founded with the name Empire in 1860. In order to prevent confusion with Empire in Walker County, the name was changed in 1879 by the town's first postmaster, James Macentepe. The name was chosen to honor the city of Bremen, Germany.