Wedderborg was built around 1370 by Egge Addinga who ruled the heerlijkheid Westerwolde on behalf of the bishop of Münster.

The Wedderborg is located at the Hoofdweg[1] in the village Wedde in the municipality of Westerwolde in the east of the province Groningen near the Dutch–German border.

It is situated on the bank of the river Westerwoldse Aa [nl] in the north of the region Westerwolde.

Most of Westerwolde was a raised bog with few inhabitants, however it formed a natural border between Groningen, East Frisia and the Prince-Bishopric of Münster, and therefore changed ownership many times during its history.

[6] The Addinga [nl] family were East Frisian nobility who owned land near the Dollart.

[7] Later in 1475, the recently appointed priest of Onstwedde intended to inform the Pope of the rule of the Addingas.

[7] The priest and his replacement were brutally murdered by Haye II, their house was ransacked,[9] and bodies dumped in the river.

[7] In 1486, Haye II was allowed to return and rebuilt Wedderborg, however Groningen and Münster decided that the family had lost their privileges, and that the building could not be fortified and strengthened.

[7] Between 1587 and 1597, witch trials were held at Wedderborg, and 21 women and 1 man were burned at the stake at Geselberg [nl].

In 1828, the building was bought by notary Arnold Hendrik Koning, and remained in possession of his descendants until 1955.