Vendsyssel

Vendsyssel is the northernmost traditional district of Denmark and of Jutland. Being divided from mainland Jutland by the Limfjord, it is technically a part of the North Jutlandic Island. Vendsyssel is part of the North Denmark Region.

Vendsyssel neighbours Hanherred to the southwest and Himmerland to the south, across the Limfjord. Whether the island Læsø is also a part of Vendsyssel, is a matter of definition. The major towns of Vendsyssel are Hjørring, Frederikshavn, Brønderslev, Sæby, Hirtshals, Løkken, Nørresundby and, on its northern tip, Skagen. The dominating city is, however, Aalborg which is mainly situated outside Vendsyssel on the southern shore of the Limfjord with Nørresundby as a secondary, northern centre.

Adam of Bremen (ca. 1075) calls Vendsyssel Wendila, Ælnoth (ca. 1100) calls it Wendel, the Icelandic literature Vendill. Derived from this is the ethnic name wændlar, Danish vendelboer, which is part of the name of the syssel. In the Danish Census Book (Kong Valdemars Jordebog, ca. 1231) Wændlesysæl, Wendelsysel, Wændil. Presumably originally the name of the Limfjord, then name of the region north of it.

According to historians and linguists, the name Vendsyssel may be derived from the Germanic tribe of the Vandals. Syssel is an ancient form of administrative region. Vendel (Old Danish Wændil) was also the ancient name of the Limfjord itself.

...
Wikipedia