Eastergoa (also Ostergau, Ostergo, or Oostergo) was one of the Seven Sealands and one of the three Gaue within what is today the province of Friesland in the Netherlands.
Area On its west side Eastergoa was bordered by the Middelsee with Westergoa on the other side of the water. To the south the Alde Leppedyk and the Boarn were the border with , and later with (). To the east it was bordered by the Lauwers, the Lauwerzee and the Westerkwartier of the Ommelanden (the western portion of the today's province of Groningen).
1200 The whole of this area belonged to Wininge and Achtkarspelen, which was at that point still a part of Eastergoa. Around 1200 Wininge comprised Dantumadeel, Dongeradeel and Ferwerderadeel ( and ) in the north and , Leeuwarderadeel and Tietjerksteradeel in the south ( and ). Around 1250 it was split into two parts called the Noardlike njoggen ('northern nine') and the Sudlike njoggen ('southern nine').
1500 Around 1500 Eastergoa was further divided into two cities and eleven (; municipalities).
The eleven of EastergoaNumberDutch name West Frisian name1LeeuwarderadeelLjouwerteradiel2FerwerderadeelFerwerderadiel3WestdongeradeelWest-Dongeradiel4OostdongeradeelEast-Dongeradiel5KollumerlandKollumerlân6Achtkarspelen7DantumadeelDantumadiel8TietjerksteradeelTytsjerksteradiel9SmallingerlandSmellingerlân10IdaarderadeelIdaarderadiel11RauwerderhemRaerderhimThe two citiesLetterDutch nameWest Frisian nameLwLeeuwardenLjouwertStadsfries: DDokkum
See also Albdag