Gästrikland (Swedish pronunciation: [ˈjɛ̌sːtrɪkland] ) is a historical province or landskap on the eastern coast of Sweden. It borders Uppland, Västmanland, Dalarna, Hälsingland and the Gulf of Bothnia. Gästrikland is the southernmost and the most densely populated of the Norrland provinces. Other forms of the name used are Gestricia and Gastrikland. Before 1900, the spelling was officially Gestrikland in Swedish. Administration. The traditional provinces of Sweden serve no administrative or political purposes, but are historical and cultural entities.
https://en.wikipedia.org/wiki/G%C3%A4strikland