Roslagen is the name of the coastal areas of Uppland province in Sweden, which also constitutes the northern part of the Stockholm archipelago. Historically, it was the name for all the coastal areas of the Baltic Sea, including the eastern parts of lake Mälaren, belonging to Svealand. The name was first mentioned in the year 1493 as "Rodzlagen". Before that the area was known as Roden. Roden had a skeppslag (roughly translated: ship district), the coastal equivalent to the inland Hundreds.
https://en.wikipedia.org/wiki/Roslagen
Roslagen is the name of the coastal areas of Uppland province in Sweden, which also constitutes the northern part of the Stockholm archipelago. Historically, it was the name for all the coastal areas of the Baltic Sea, including the eastern parts of lake Mälaren, belonging to Svealand. The name was first mentioned in the year 1493 as "Rodzlagen". Before that the area was known as Roden. Roden had a skeppslag (roughly translated: ship district), the coastal equivalent to the inland Hundreds.
