of the Innersdijken which transported its water to the North, to the Winsumerdiep at Onderdendam. On the eastside there was a portage, named the Rollen...

Halfambt (north of the Winsumerdiep, capital Baflo) and a southern half, which divided into Upgo or Ubbega (between Winsumerdiep and Reitdiep, capital...

part of the town Winsum (Groningen, Netherlands) that lies north of the Winsumerdiep. Originally it was a separate village. Winsum and Obergum have been connected...