The forerunners of today's Pomeranian breed were large working dogs from the Arctic regions. These dogs are commonly known as the Wolfspitz or Spitz type, which is German for "sharp point" which was the term originally used by Count Eberhard zu Sayn in the 16th Century as a reference to the features of the dog's nose and muzzle. The Pomeranian is considered to be descended from the German Spitz.
The breed is thought to have acquired its name by association with the area known as Pomerania which is located in northern Poland and Germany along the Baltic Sea. Although not the origin of the breed, this area is credited with the breeding which led to the original Pomeranian type of dog. Proper documentation was lacking until the breed's introduction into the United Kingdom. Wikipedia