The Elsineur was a case heard by the US Supreme Court in 1816. It involved a dispute between two parties, Jones (the claimant) and an unknown party referred to as "the respondent". The issue at hand was whether or not Jones had valid title to certain lands located on the island of St. Croix in the Caribbean Sea. In his claim, Jones argued that he had purchased these lands from one John Smith who held legal title to them; however, it was later discovered that Smith did not have any such right or authority over said property. After hearing both sides' arguments, the court ultimately ruled against Jones and found that he did not possess valid title to those lands due to lack of evidence supporting his claims regarding ownership rights through purchase from Smith. This ruling established precedent for future cases involving similar disputes concerning land titles and their validity under US law.

In the case of The Elsineur, Jones, Claimant (1816), Justice Johnson delivered a dissenting opinion. He argued that the majority's interpretation of the treaty between Great Britain and Denmark was too narrow and failed to consider its full scope. He believed that it should be interpreted in light of international law which would allow for compensation for damages incurred by neutral vessels during wartime operations. Furthermore, he argued that if such an interpretation were adopted then there would be no need to resort to "the more delicate question" as to whether or not a particular vessel had been lawfully seized under maritime law. In conclusion, Justice Johnson maintained his position that Jones' claim should have been allowed on grounds of both public policy and justice since it was clear from all evidence presented at trial that he had suffered losses due to British naval activity during war time operations against Denmark-Norway.