Leonard Gyllenhaal
Encyclopedia
Leonard Gyllenhaal was a Swedish
Sweden
Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 military officer and entomologist
Entomology
Entomology is the scientific study of insects, a branch of arthropodology...

.

Born on the Ribbingsberg manor
Manorialism
Manorialism, an essential element of feudal society, was the organizing principle of rural economy that originated in the villa system of the Late Roman Empire, was widely practiced in medieval western and parts of central Europe, and was slowly replaced by the advent of a money-based market...

 in Västergötland
Västergötland
', English exonym: West Gothland, is one of the 25 traditional non-administrative provinces of Sweden , situated in the southwest of Sweden. In older English literature one may also encounter the Latinized version Westrogothia....

 in west Sweden, Leonard Gyllenhaal was son of an army officer and belonged to a family of the lower nobility. He went to school (Skara trivialskola) in the cathedral town of Skara
Skara
Skara is a locality and the seat of Skara Municipality, Västra Götaland County, Sweden with 18595 inhabitants in 2005. Despite its small size, it has a long educational and ecclesiastical history. One of Sweden's oldest high schools, Katedralskolan , is situated in Skara...

 together with, among others, the future poet Johan Henrik Kellgren, and later renowned naturalists Anders Dahl
Anders Dahl
Anders Dahl was a Swedish botanist and student of Carolus Linnaeus. The dahlia flower is named after him.In 1770, Dahl entered Uppsala University as a freshman ....

 and the brothers Adam
Adam Afzelius
Adam Afzelius was a Swedish botanist and an apostle of Carl Linnaeus. Afzelius was born at Larv in Västergötland in 1750. He was appointed teacher of oriental languages at Uppsala University in 1777, and in 1785 demonstrator of botany...

 and Johan Afzelius
Johan Afzelius
Johan Afzelius was a Swedish chemist and notable as the doctoral advisor of one of the founders of modern chemistry, Jöns Jacob Berzelius....

, with whom he went on natural excursions. Like some of his friends he went to Uppsala
Uppsala University
Uppsala University is a research university in Uppsala, Sweden, and is the oldest university in Scandinavia, founded in 1477. It consistently ranks among the best universities in Northern Europe in international rankings and is generally considered one of the most prestigious institutions of...

 to study under Linnaeus
Carolus Linnaeus
Carl Linnaeus , also known after his ennoblement as , was a Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of binomial nomenclature. He is known as the father of modern taxonomy, and is also considered one of the fathers of modern ecology...

 in 1769. He never matriculated and remained in Uppsala only one semester, before switching to a military career in accordance with the wishes and traditions of the family, enrolling in the Adelsfanan ("Banner of Nobles") cavalry regiment, and a few years later transferring to the drabantkåren (Garde du Corps
Garde du Corps
Garde du Corps is French for bodyguard, and may refer to various military formations:*The Gardes du Corps of Prussia*The Garde du Corps of France during the Ancien Régime...

). Gyllenhaal, however, remained in contact with Linnaeus through an extensive correspondence and continued to work as an amateur naturalist
Natural history
Natural history is the scientific research of plants or animals, leaning more towards observational rather than experimental methods of study, and encompasses more research published in magazines than in academic journals. Grouped among the natural sciences, natural history is the systematic study...

.

He remained in military service until 1799, when he retired with the rank of major
Major
Major is a rank of commissioned officer, with corresponding ranks existing in almost every military in the world.When used unhyphenated, in conjunction with no other indicator of rank, the term refers to the rank just senior to that of an Army captain and just below the rank of lieutenant colonel. ...

. As this did not take all of his time – different detachments of the Garde du Corps served at the royal court for only brief periods each year – he worked on his father's estate Höberg in Norra Vånga parish in Västergötland
Västergötland
', English exonym: West Gothland, is one of the 25 traditional non-administrative provinces of Sweden , situated in the southwest of Sweden. In older English literature one may also encounter the Latinized version Westrogothia....

, which he managed on his own from 1784. He developed the estate, experimenting with new crops such as the American maize
Maize
Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable...

.

His main interest ever since youth was entomology
Entomology
Entomology is the scientific study of insects, a branch of arthropodology...

, and already in 1775 he had collected some 1300 largely unidentified beetle species from the western part of Götaland
Götaland
Götaland , Gothia, Gothland, Gothenland, Gautland or Geatland is one of three lands of Sweden and comprises provinces...

. He built a private entomological museum, library and study on Höberg which he called the "Fly house". At his death, he had a collection of 400 boxes of prepared and identified insects, which he left to the Royal Swedish Society of Sciences in Uppsala (later deposited at the Uppsala University Museum of Zoology). His main publication was the Insecta Suecica, describing the insects of Sweden, which took him 30 years to complete and was awarded the gold medal of the Academy of Sciences
Royal Swedish Academy of Sciences
The Royal Swedish Academy of Sciences or Kungliga Vetenskapsakademien is one of the Royal Academies of Sweden. The Academy is an independent, non-governmental scientific organization which acts to promote the sciences, primarily the natural sciences and mathematics.The Academy was founded on 2...

. Another claim to fame for Gyllenhaal is the fact that he named the common beetle family of Histeridae. He was also elected an honorary member of the French Société entomologique
Société entomologique de France
The Société entomologique de France, or French Entomological Society, is devoted to the study of insects. It was founded in 1832.The society was created by eighteen Parisian entomologists on January 31, 1832...

. He was appointed a Knight of the Royal Order of Vasa
Order of Vasa
The Royal Order of Vasa was a Swedish Royal order of chivalry, awarded to citizens of Sweden for service to state and society especially in the fields of agriculture, mining and commerce. It was instituted on 29 May 1772 by King Gustav III of Sweden...

.
Leonard Gyllenhaal was a leading Swedenborgian who supported the printing and spreading of Swedenborg
Emanuel Swedenborg
was a Swedish scientist, philosopher, and theologian. He has been termed a Christian mystic by some sources, including the Encyclopædia Britannica online version, and the Encyclopedia of Religion , which starts its article with the description that he was a "Swedish scientist and mystic." Others...

's writings. His grandson, the Swedish-American journalist Anders Leonard Gyllenhaal, retained the faith of his grandfather and was a member of the Swedenborgian New Church. His descendants in the American branch of the family include the actor siblings Jake
Jake Gyllenhaal
Jacob Benjamin "Jake" Gyllenhaal is an American actor. The son of director Stephen Gyllenhaal and screenwriter Naomi Foner, Gyllenhaal began acting at age ten...

 and Maggie Gyllenhaal
Maggie Gyllenhaal
Margaret Ruth "Maggie" Gyllenhaal born November 16, 1977) is an American actress. She is the daughter of director Stephen Gyllenhaal and screenwriter Naomi Foner Gyllenhaal and the older sister of actor Jake Gyllenhaal. She made her screen debut when she began to appear in her father's films...

.

See also

  • Gyllenhaal family
    Gyllenhaal family
    Gyllenhaal is a Swedish noble family descended from the cavalry Lieutenant Nils Gunnarsson Haal , ennobled in 1652 with a change of surname to Gyllenhaal...

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