The parish of Gjerstad was established as a municipality on 1 January 1838. The borders have not changed since that time.
Name
The municipality is named after the old Gjerstadfarm, since the Gjerstad Church was built there. One explanation of the name says that the first element is the genitive case of the male nameGeirrekr and the last element is staðir which means "homestead" or "farm". Another possibly explanation of the first part of the name says that it comes from the wordgeirr which means "spear". Historically, the name has been spelled Gerikstadum, Gierestat, Gierrestad, and Gjerrestad.
Coat-of-arms
The coat-of-arms is from modern times; they were granted on 18 April 1986. The arms show three white or silver knives on a red background. The knife was chosen as a symbol for the smithies and knife makers in the municipality. Knife making has long been a local tradition for which the village is well known.
Until about 1650, the prestegjeld of Gjerstad was named Vissedal, a very proper description of the area. Gjerstad has been inhabited from the Stone Age and Viking Age through modern times. Agriculture has long been important, and until only decades ago the more marginal outfields in Upper Gjerstad were still utilized. Forestry also provided an important historic economic contribution, and logs were driven on rivers and streams in the municipality. To aid log transport by floating, numerous dams were constructed. Eikeland Ironworks were a significant contribution to the economy as well.
The municipal council of Gjerstad is made up of 17 representatives that are elected to four year terms. Currently, the party breakdown is as follows:
Attractions
The remains of Eikeland Ironworks can still be seen in the upper valley. Gjerstad was known for its handmade knives and the coat-of-arms recognizes this heritage.
Horga was a former pagan place of sacrifice which was destroyed by Olav Trygvason, during the introduction of Christianity to Gjerstad. It lies from Holmen Gård.
in Gjerstad is the site of a former farm. It was a Norwegian national center for folk art and handicraft until it was sold into private ownership in 2013. The site has been awarded the St. Olaf's Rose, a hallmark for Norwegian Heritage which designates especially distinguished places.
Notable residents
Niels Henrik Abel, a Norwegian mathematician who was the son of Søren Georg Abel. His grandfather, Hans Mathias Abel, served as the priest at Gjerstad Church from 1785 to 1804. His father, Søren, became the priest at Gjerstad in 1804, so Niels Abel spent his boyhood in the rectory at Gjerstad. Abel spent his last months at the nearby Frolands verk.