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Leonhardt Johannes Friedrich Janssen

Person human Q94943663
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Summary

Leonhardt Johannes Friedrich Janssen was born on 1806[1]. He died on 1869[2]. He worked as a historian[3], classical scholar[4], and writer[5]. He is known by 3 alternative names across languages and contexts.[6]

Key Facts

  • Member of: Royal Netherlands Academy of Arts and Sciences[7]
  • Sex or gender: male[8]
  • Commons category: L. J. F. Janssen[9]
  • Family name: Janssen[10]
  • Has works in the collection: CODA Museum[11]
  • Copyright status as a creator: copyrights on works have expired[12]

FAQs

What did Leonhardt Johannes Friedrich Janssen do for work?

Leonhardt Johannes Friedrich Janssen worked as a historian[3], classical scholar[4], and writer[5].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [8] ↑ . BnF authorities. Retrieved . wikidata.org.
  2. [3] ↑ . Catalog of the German National Library. Retrieved . wikidata.org.
  3. [4] ↑ . Catalog of the German National Library. Retrieved . wikidata.org.
  4. [5] ↑ . collectiegelderland.nl. Retrieved . collectiegelderland.nl. Provenance: wikidata.org.
  5. [9] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [1] ↑ . Catalog of the German National Library. Retrieved . wikidata.org.
  8. [2] ↑ . Catalog of the German National Library. Retrieved . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . collectiegelderland.nl. Retrieved . collectiegelderland.nl. Provenance: wikidata.org.
  11. [12] ↑ . Retrieved . wikidata.org.

Aggregate / graph-position facts

  1. [6] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Leonhardt Johannes Friedrich Janssen. Retrieved October 14, 2026, from https://4ort.xyz/entity/leonhardt-johannes-friedrich-janssen
MLA “Leonhardt Johannes Friedrich Janssen.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/leonhardt-johannes-friedrich-janssen.
BibTeX @misc{4ortxyz_leonhardt-johannes-friedrich-janssen_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Leonhardt Johannes Friedrich Janssen}}, year = {2026}, url = {https://4ort.xyz/entity/leonhardt-johannes-friedrich-janssen}, note = {Accessed: 2026-10-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Leonhardt Johannes Friedrich Janssen — https://4ort.xyz/entity/leonhardt-johannes-friedrich-janssen (retrieved 2026-10-14)

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Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 8d ago · AntiDerangedKhanTengriAction · 2026-10-14 view diff on Wikidata ↗
    Open library id → OL5679875A, OL5476685A, OL2457540A
    Claims rich → —
    "/* wbcreateclaim-create:1| */ Open library id: OL2457540A, [[:toollabs:quickstatements/#/batch/290734|batch #290734]]"
  2. 8d ago · AntiDerangedKhanTengriAction · 2026-10-14 view diff on Wikidata ↗
    Open library id → OL5679875A, OL5476685A, OL2457540A
    Claims rich → —
    "/* wbcreateclaim-create:1| */ Open library id: OL5476685A, [[:toollabs:quickstatements/#/batch/290734|batch #290734]]"
  3. 8d ago · AntiDerangedKhanTengriAction · 2026-10-14 view diff on Wikidata ↗
    Deutsche biographie (gnd) id → 172167450
    Yale lux id → person/36b84443-73c9-4e94-8199-bc8c7d6db18a
    Dbnl author id → jans081
    Library of congress authority id → nr96016328
    + 28 other properties edited (see Wikidata diff for full list)
    "/* wbcreateclaim-create:1| */ Open library id: OL5679875A, [[:toollabs:quickstatements/#/batch/290734|batch #290734]]"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.