Netherlands
Onstaborg
Borg · Winsum
Borg
Onstaborg
Netherlands
About
Onstaborg was a borg in the northeast Netherlands. It was located in Sauwerd, Groningen. The borg was founded in or before 1325 by the family Onsta (also known as Onseda, Onsitha or Onsatha).
The Onsta family belonged to one of the oldest and most prominent families of the Ommelanden. The Onsta family also owned an Onstaborg in Wetsinge.
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