Prior to the Plantation of Ulster the fishing rights on the River would have been owned by the O’Neills and the O’Donnells, the Chieftains of Tír Eoghain and Donegal respectively. When the Plantation of Ulster started in 1609 a body called The Honourable The Irish Society had been set up by Royal Charter in 1613 to administer the affairs of the Plantation. The Society was then given the rights to the fishing on the river and on the River Bann, all except the parts of the rivers owned by the Bishop of Derry. In 1944 an action for trespass was taken by the Society against a fisherman from Porthall who they deemed to be fishing illegally. The case was heard by Mr Justice George Gavan Duffy in the high court in Dublin during 1947/48. The case was dismissed against the man. The Society then appealed the decision and also appealed to both Northern and Southern Governments at losing the case. Both Governments agreed to buy the fishing rights for the sum of £110,280 on condition that they drop the appeal. This led to the establishment of a commission to oversee the fishing on the river and on Lough Foyle. The body set up was called the Foyle Fisheries Commission and was established by a Bill passed simultaneously by the Governments of the Republic of Ireland and Northern Ireland on 25 March 1952. The Foyle Fisheries Commission was disestablished on 10 April 2007 with the signing of the Foyle & Carlingford Fisheries Act 2007.