North Germanic peoples, commonly called Scandinavians,Nordic peoples and in a medieval context Norsemen, were a Germanic linguistic group originating from the Scandinavian Peninsula. They are identified by their cultural similarities, common ancestry and common use of the Proto-Norse language from around 200 AD, a language that around 800 AD became the Old Norse language, which in turn later became the North Germanic languages of today.The North Germanic peoples are thought to have emerged as a distinct people in what is now southern Sweden in the early centuries AD. Several North Germanic tribes are mentioned by classical writers in antiquity, in particular the Swedes, Danes, Geats, Gutes and Rugii. During the subsequent Viking Age, seafaring North Germanic adventurers, commonly referred to as Vikings, raided and settled territories throughout Europe and beyond, founding several important political entities and exploring the North Atlantic as far as North America. Groups that arose from this expansion include the Normans, the Norse–Gaels and the Rus' people. The North Germanic peoples of the Viking Age went by various names among the cultures they encountered, but are generally referred to as Norsemen. With the end of the Viking Age in the 11th century, the North Germanic peoples were converted from their native Norse paganism to Christianity, while their previously tribal societies were centralized into the modern kingdoms of Denmark, Norway and Sweden.Modern linguistic groups that descended from the North Germanic peoples are the Danes, Icelanders, Norwegians, Swedes, and Faroese. These groups are often collectively referred to as Scandinavians, although Icelanders and the Faroese are sometimes excluded from that definition. Depiction of ancient rituals at the Rock Carvings in Tanum, Nordic Bronze Age Modern groups descended from the North Germanic peoples are the Danes, Faroese people, Icelanders, Norwegians and Swedes. These groups are often referred to as Scandinavians. Although North Germanic, Icelanders and the Faroese, and even the Danes, are sometimes not included as Scandinavians.