John Hadley

English mathematician and astronomer; (1682-1744)
Person human Q445128
Press Enter · cited answer in seconds

John Hadley

Summary

John Hadley is a human[1]. He was born in Hertfordshire[2]. He was born on +1682-04-16T00:00:00Z[3]. He passed away in London[4]. He died on +1744-02-14T00:00:00Z[5]. He worked as a mathematician[6], astronomer[7], inventor[8], and nautical instrument maker[9]. He ranks in the top 0.73% of human entities by monthly Wikipedia readership (39 views/month, #7,271 of 1,000,298).[10]

Key Facts

  • John Hadley's place of birth was Hertfordshire[2].
  • John Hadley was born in Bloomsbury[11].
  • John Hadley passed away in London[4].
  • John Hadley died in East Barnet[12].
  • John Hadley was born on +1682-04-16T00:00:00Z[3].
  • John Hadley died on +1744-02-14T00:00:00Z[5].
  • John Hadley held citizenship in Kingdom of Great Britain[13].
  • John Hadley's professions included mathematician[6].
  • John Hadley's professions included astronomer[7].
  • John Hadley's professions included inventor[8].
  • John Hadley worked as a nautical instrument maker[9].
  • John Hadley's field of work was mathematics[14].
  • A notable work attributed to John Hadley is octant[15].
  • A notable work attributed to John Hadley is reflecting telescope[16].
  • John Hadley received the Fellow of the Royal Society[17].
  • John Hadley was a member of Royal Society[18].
  • John Hadley's image is recorded as John Hadley.jpg[19].
  • John Hadley's image is recorded as John Hadley, 1682-1744 RMG BHC2731.tiff[20].
  • John Hadley is recorded as male[21].
  • John Hadley's instance of is recorded as human[22].
  • John Hadley's ISNI is recorded as 0000000080860203[23].
  • John Hadley's VIAF cluster ID is recorded as 7326235[24].
  • John Hadley's GND ID is recorded as 14225486X[25].
  • John Hadley's Library of Congress authority ID is recorded as nr2002021874[26].
  • John Hadley's Bibliothèque nationale de France ID is recorded as 10240706b[27].

Body

Origins and Family

Recorded place of birth include Hertfordshire[2], a ceremonial county of England[28], in United Kingdom[29] and Bloomsbury[11], an area of London[30], in United Kingdom[31]. John Hadley was born on +1682-04-16T00:00:00Z[3].

Career and Affiliations

Recorded occupations include mathematician[6], astronomer[7], inventor[8], and nautical instrument maker[9]. John Hadley's field of work was mathematics[14].

Works and Contributions

Notable works include octant[15] and reflecting telescope[16], an astronomical instrument[32]. Things named for John Hadley include Mons Hadley[33], a mountain[34] and Hadley Upland[35], a landform[36].

Recognition

John Hadley received the Fellow of the Royal Society[17].

Death and Burial

John Hadley died on +1744-02-14T00:00:00Z[5]. Recorded place of death include London[4], a metropolis[37], in Roman Empire[38], founded in 0047[39] and East Barnet[12], a suburb[40], in United Kingdom[41].

Why It Matters

John Hadley ranks in the top 0.73% of human entities by monthly Wikipedia readership (39 views/month, #7,271 of 1,000,298).[10] He has Wikipedia articles in 16 language editions, a strong signal of global cultural recognition.[42] He is known by 5 alternative names across languages and contexts.[43]

He is credited with the discovery of octant[44]. Entities named for him include Mons Hadley[33], a mountain[34] and Hadley Upland[35], a landform[36].

FAQs

Where was John Hadley born?

John Hadley's place of birth was Hertfordshire[2].

Where did John Hadley die?

John Hadley died in London[4].

What did John Hadley do for work?

John Hadley worked as mathematician[6], astronomer[7], inventor[8], and nautical instrument maker[9].

What awards did John Hadley receive?

Honors received include Fellow of the Royal Society[17].

What did John Hadley discover?

John Hadley is credited as discoverer of octant[44].

References

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

Direct Wikidata claims

  1. [19] . wikidata.org.
  2. [20] . wikidata.org.
  3. [2] . Complete Dictionary of Scientific Biography. wikidata.org.
  4. [11] . MacTutor History of Mathematics archive. wikidata.org.
  5. [4] . wikidata.org.
  6. [12] . MacTutor History of Mathematics archive. wikidata.org.
  7. [21] . Integrated Authority File. Retrieved . wikidata.org.
  8. [13] . wikidata.org.
  9. [22] . wikidata.org.
  10. [14] . wikidata.org.
  11. [6] . wikidata.org.
  12. [7] . Enciclopedia universal ilustrada europeo-americana. wikidata.org.
  13. [8] . Retrieved . wikidata.org.
  14. [9] . Q132230989. Retrieved . n2t.net. Provenance: wikidata.org.
  15. [17] . MacTutor History of Mathematics archive. wikidata.org.
  16. [23] . International Standard Name Identifier. wikidata.org.
  17. [24] . wikidata.org.
  18. [25] . wikidata.org.
  19. [26] . wikidata.org.
  20. [27] . wikidata.org.
  21. [18] . Enciclopedia universal ilustrada europeo-americana. catalogues.royalsociety.org. Provenance: wikidata.org.
  22. [3] . MacTutor History of Mathematics archive. Retrieved . britannica.com. Provenance: wikidata.org.
  23. [5] . MacTutor History of Mathematics archive. Retrieved . britannica.com. Provenance: wikidata.org.
  24. [15] . wikidata.org.
  25. [16] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [44] . wikidata.org. → on this site
  2. [33] . wikidata.org. → on this site
  3. [35] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [28] . Wikidata. wikidata.org. → on this site
  2. [29] . Wikidata. wikidata.org. → on this site
  3. [30] . Wikidata. wikidata.org. → on this site
  4. [31] . Wikidata. wikidata.org. → on this site
  5. [37] . Wikidata. wikidata.org. → on this site
  6. [38] . Wikidata. wikidata.org. → on this site
  7. [39] . Wikidata. wikidata.org. → on this site
  8. [40] . Wikidata. wikidata.org. → on this site
  9. [41] . Wikidata. wikidata.org. → on this site
  10. [32] . Wikidata. wikidata.org. → on this site
  11. [34] . Wikidata. wikidata.org. → on this site
  12. [36] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [10] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [42] . Wikidata sitelinks. wikidata.org.
  3. [43] . 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). John Hadley. Retrieved April 10, 2026, from https://4ort.xyz/entity/john-hadley
MLA “John Hadley.” 4ort.xyz Knowledge Graph, 4ort.xyz, 10 Apr. 2026, https://4ort.xyz/entity/john-hadley.
BibTeX @misc{4ortxyz_john-hadley_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{John Hadley}}, year = {2026}, url = {https://4ort.xyz/entity/john-hadley}, note = {Accessed: 2026-04-10}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): John Hadley — https://4ort.xyz/entity/john-hadley (retrieved 2026-04-10)

Canonical URL: https://4ort.xyz/entity/john-hadley · Last refreshed: