(of Lippe), bishop of Utrecht, was murdered after being taken prisoner at Koevorden in 1237.
In 1143 Heribert of Bierum, bishop of Utrecht, converted the office into an hereditary fief in favour of his brother Liffert, on the extinction of whose male line it was partitioned between the families of Koevorden (or Coevorden) and van den Hove.
At the close of the, 4th century the heirs of the Koevorden and van den Hove families sold their rights, first to the town, and then to the bishop. A struggle followed, in which the city was temporarily worsted; but in 1440 Bishop Dirk II.
After 1849 the canal programme was again taken up by the state, which alone or in conjunction with the provincial authorities constructed the Apeldoorn-Dieren canal (1859-1869), the drainage canals of the " Peel " marsh in North Brabant, and of the eastern provinces, namely, the Deurne canal (1876-1892) from the Maas to Helenaveen, the Almelo (1851-1858) and Overysel (1884-1888) canals from Zwolle, Deventer and Almelo to Koevorden, and the Stieltjes (1880-1884), and Orange (1853-1858 and 1881-1889) canals in Drente, the North Williams canal (1856-1862) between Assen and Groningen, the Ems (1866-1876) ship canal from Groningen to Delfzyl, and the New Merwede, and enlarged the canal from Harlingen by way of Leeuwarden to the Lauwars Zee.
These include various local lines such as the line AlkmaarHoorn (1898), Ede-Barneveld-Nykerk, Enschede-Ahaus in Germany (1902), Leeuwarden to Franeker, Harlingen and Dokkum, and the line Zwolle-Almelo (junction at Marienberg) Koevorden-StadskanalVeendam-Delfzyl, connecting all the fen countries on the eastern borders.
The southern streams are all collected at two points on the southern borders, namely, at Meppel and Koevorden, whence they communicate with the Zwarte Water and the Vecht respectively by means of the Meppeler Diep and the Koevorden canal.
In the south Meppel and Koevorden absorb the largest amount of trade.
Gave the countship to the bishop and chapter of Utrecht, who governed it through the burgrave, or chatelain, of Koevorden, a dignity which became hereditary after 1143 in the family of Ludolf or Roelof, brother of Heribert of Bierum, bishop of Utrecht (1138-1150).
1410) of Borculo-Koevorden was deposed by Bishop Frederick of Utrecht, and the country was henceforth administered by an episcopal official (amptrnan), who was, however, generally a native.