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.
Roden had a skeppslag (roughly translated: ship district), the coastal equivalent to the inland Hundreds.
The name comes from the rodslag, which is an old coastal Uppland word for a rowing crew of warrior oarsmen.
[2] Etymologically, Roden, or Roslagen, is the source of the Finnish and Estonian names for Sweden: Ruotsi and Rootsi.
Tiunda
Attunda
Roden
Fjärdhundra
The coastline has changed considerably in the last millennium due to
post-glacial rebound
. Originally there was a sea bay coming in from the north all the way into Uppsala. Roslagen is the modern name for the area which roughly corresponds to what was called Roden in the
Middle Ages
.