Schleswig was divided into three sýslur, viz. Barvidsyssel [da], Ellumsyssel [da] and Istedsyssel [da]. The North Frisian Islands were known as Utlande.

Herred, Sundeved and a small part of eastern Søndre Rangstrup Herred Istedsyssel: Nørre & Sønder Gøs Herreder, Vis Herred, Ugle Herred, Husby Herred,

exceptional in being included into the syssel divisions (as part of Istedsyssel) but was not subdivided into herreder. The area of North Frisian settlement