Johannes Loccenius

Johannes Loccenius (Johan Locken) (13 March 1598 – 27 July 1677) was a German jurist and historian, known as an academic in Sweden.

He was born at Itzehoe, Holstein, the son of a tradesman, and educated at the Gelehrtenschule des Johanneums. He went to study at and Helmstedt in 1616, and in 1617 was in Leiden. After a period at Hamburg, where he encountered in particular Holstenius, he returned to Leiden in 1624, where he received a doctorate in law.

Loccenius was recruited by Johan Skytte for Gustavus Adolphus, and went to Sweden. From 1628 to 1642 he taught a humanist and political syllabus as professor skytteanus; from 1634 he also taught Roman law. As librarian also at the University of Uppsala, he received the embassy of Bulstrode Whitelocke, and they discussed English jurists including Francis Bacon and John Selden.

The De jure maritimo was a commentary on Swedish maritime law as published in the Legisterium Sueciæ. As De jure maritimo et navali it went through a number of editions. The maritime law work of Loccenius was later republished, with works by Franz Stypmann and Reinhold Kuricke, by Johann Gottlieb Heineccius. Loccenius wrote in particular on piracy. He was an early author on legal concepts of territorial waters, whose views were quoted long afterwards.

As legal antiquarian Loccenius published an edition of the corpus of Swedish provincial law, the Lex Sueo-Gothorum. His Synopsis juris ad leges Sueticas accommodata (1648) was an early example of the 17th-century use of the Decalogue to classify capital crimes. The Lexicon juris Svevo-Gothicae (1651) was a largely linguistic work.

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