This was not recognized by the Confederation and the Danish government, and the peace settlement in 1851 specified that Schleswig was not a member. The Grand Duchy of Luxembourg (lost over half of its territory in the west to Belgium in the breakup of the United Kingdom of the Netherlands in 1839, and thereby causing Duchy of Limburg to become a member.) The Duchy of Limburg (became a member in 1839 as a compensation for territorial losses in the Grand Duchy of Luxembourg that were caused by the breakup of the United Kingdom of the Netherlands.)