Onstaborg (Sauwerd)

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Key Information

Onstaborg
Sauwerd, Netherlands
Onstaborg
Site information
Type	Borg
Location
Onstaborg Location in Groningen in the Netherlands
Coordinates	53°17′42″N 6°31′52″E / 53.2949°N 6.5312°E / 53.2949; 6.5312
Site history
Built	Was known to exist as early as 1325
Demolished	1725
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Onstaborg was a borg in the northeast Netherlands. It was located in Sauwerd, Groningen. The borg was founded in or before 1325^[1] 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.