John Loudon McAdam

Scottish engineer and road-builder (1756–1836)
Person human Q437708
John Loudon McAdam
engraving by Charles Turner · Public Domain · Wikimedia
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John Loudon McAdam was born on September 21, 1756, in Ayr [1][2][3][4], and died on November 26, 1836, in Moffat from a myocardial infarction [1][2][5][4]. A citizen of the United Kingdom of Great Britain and Ireland, he worked as a civil engineer and inventor . His parents were James McAdam of Waterhead and Susannah Cochrane [3][3].

McAdam married Gloria Margaretta Nicoll and later Anne Charlotte Delancey in 1827 . He had two children, James Nicoll McAdam and John Loudon McAdam [3]. After his death, he was buried in Scotland .

John Loudon McAdam

Summary

John Loudon McAdam is a human[1]. His place of birth was Ayr[2]. He was born on September 21, 1756[3]. He passed away in Moffat[4]. He died on November 26, 1836[5]. He worked as a civil engineer[6] and inventor[7]. He ranks in the top 0.72% of human entities by monthly Wikipedia readership (228 views/month, #7,189 of 1,000,298).[8]

Key Facts

  • Born in Ayr[2], John Loudon McAdam…
  • John Loudon McAdam died in Moffat[4].
  • John Loudon McAdam was born on September 21, 1756[3].
  • John Loudon McAdam died on November 26, 1836[5].
  • Burial took place at Scotland[9].
  • John Loudon McAdam's father was James McAdam of Waterhead[10].
  • John Loudon McAdam's mother was Susannah Cochrane[11].
  • Among John Loudon McAdam's spouses was Gloria Margaretta Nicoll[12].
  • John Loudon McAdam was married to Anne Charlotte Delancey[13].
  • A child of John Loudon McAdam was James Nicoll McAdam[14].
  • A child of John Loudon McAdam was John Loudon McAdam[15].
  • John Loudon McAdam held citizenship in United Kingdom of Great Britain and Ireland[16].
  • John Loudon McAdam's professions included civil engineer[6].
  • John Loudon McAdam worked as an inventor[7].
  • John Loudon McAdam is recorded as male[17].
  • John Loudon McAdam's instance of is recorded as human[18].
  • John Loudon McAdam's Commons category is recorded as John Loudon McAdam[19].
  • John Loudon McAdam's archives at is recorded as ETH Zurich University Archives[20].
  • The cause of death was myocardial infarction[21].
  • John Loudon McAdam's family name is recorded as McAdam[22].
  • John Loudon McAdam's given name is recorded as John[23].
  • John Loudon McAdam's given name is recorded as Loudon[24].
  • John Loudon McAdam's manner of death is recorded as natural causes[25].
  • John Loudon McAdam's described by source is recorded as Nordisk familjebok[26].
  • John Loudon McAdam's described by source is recorded as Dictionary of National Biography, 1885–1900[27].

Body

Origins and Family

John Loudon McAdam was born in Ayr[2]. He was born on September 21, 1756[3]. His father was James McAdam of Waterhead[10]. His mother was Susannah Cochrane[11].

Career and Affiliations

Recorded occupations include civil engineer[6] and inventor[7].

Personal Life

Spouses include Gloria Margaretta Nicoll[12], 1759–1825[28] and Anne Charlotte Delancey[13], 1786–1862[29]. Children include James Nicoll McAdam[14], a civil engineer[30], 1786–1852[31], of Kingdom of Great Britain[32] and John Loudon McAdam[15], 1792–1857[33].

Death and Burial

John Loudon McAdam died on November 26, 1836[5]. He died in Moffat[4]. The cause of death was myocardial infarction[21]. He is buried at Scotland[9].

Works and Contributions

Things named for John Loudon McAdam include macadam[34].

Why It Matters

John Loudon McAdam ranks in the top 0.72% of human entities by monthly Wikipedia readership (228 views/month, #7,189 of 1,000,298).[8] He has Wikipedia articles in 19 language editions, a strong signal of global cultural recognition.[35] He is known by 20 alternative names across languages and contexts.[36]

He is credited with the discovery of macadam[37]. Entities named for him include macadam[34].

FAQs

Where was John Loudon McAdam born?

John Loudon McAdam's place of birth was Ayr[2].

Where did John Loudon McAdam die?

John Loudon McAdam passed away in Moffat[4].

Who were John Loudon McAdam's parents?

John Loudon McAdam's father was James McAdam of Waterhead[10]. John Loudon McAdam's mother was Susannah Cochrane[11].

Who was John Loudon McAdam married to?

John Loudon McAdam's spouses include Gloria Margaretta Nicoll[12] and Anne Charlotte Delancey[13].

What did John Loudon McAdam do for work?

John Loudon McAdam worked as civil engineer[6] and inventor[7].

What did John Loudon McAdam discover?

John Loudon McAdam is credited as discoverer of macadam[37].

References

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

Direct Wikidata claims

  1. [2] . wikidata.org.
  2. [4] . wikidata.org.
  3. [17] . Integrated Authority File. Retrieved . wikidata.org.
  4. [10] . The Peerage. wikidata.org.
  5. [11] . The Peerage. wikidata.org.
  6. [12] . Retrieved . wikidata.org.
  7. [13] . Retrieved . wikidata.org.
  8. [16] . wikidata.org.
  9. [18] . wikidata.org.
  10. [14] . wikidata.org.
  11. [15] . The Peerage. wikidata.org.
  12. [6] . wikidata.org.
  13. [7] . Retrieved . wikidata.org.
  14. [9] . wikidata.org.
  15. [19] . wikidata.org.
  16. [20] . vls.hsa.ethz.ch. Retrieved . vls.hsa.ethz.ch. Provenance: wikidata.org.
  17. [21] . wikidata.org.
  18. [3] . Encyclopædia Britannica Online. Retrieved . wikidata.org.
  19. [5] . Encyclopædia Britannica Online. Retrieved . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [37] . wikidata.org. → on this site
  2. [34] . 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. [32] . Wikidata. wikidata.org. → on this site
  6. [33] . Wikidata. wikidata.org. → on this site

Class ancestry

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

Aggregate / graph-position facts

  1. [8] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [35] . Wikidata sitelinks. wikidata.org.
  3. [36] . Wikidata aliases. wikidata.org.

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APA 4ort.xyz Knowledge Graph. (2026). John Loudon McAdam. Retrieved April 10, 2026, from https://4ort.xyz/entity/john-loudon-mcadam
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BibTeX @misc{4ortxyz_john-loudon-mcadam_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{John Loudon McAdam}}, year = {2026}, url = {https://4ort.xyz/entity/john-loudon-mcadam}, note = {Accessed: 2026-04-10}}
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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. 3d ago · KrBot bot · 2026-05-30 view diff on Wikidata ↗
    Occupation civil engineer, inventor
    "/* wbsetclaimvalue:1| */ [[Property:P106]]: [[Q47064]], см. / see [[Template:Autofix|autofix]] на / on [[Property talk:P106]]"
  2. 6d ago · Sj1mor · 2026-05-27 view diff on Wikidata ↗
    Plaque image John Loudoun McAdam's Gravestone, Moffat.JPG
    "/* wbsetclaim-create:2||1 */ [[Property:P1801]]: John Loudoun McAdam's Gravestone, Moffat.JPG"
  3. 13d ago · Epìdosis · 2026-05-20 view diff on Wikidata ↗
    Occupation civil engineer, inventor
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/32086|batch #32086]]: import P21 and P106 from GND (28)"
  4. 21d ago · Epìdosis · 2026-05-12 view diff on Wikidata ↗
    Child James Nicoll McAdam, John Loudon McAdam
    Instance of human
    Father James McAdam of Waterhead
    Described by source Nordisk familjebok, Dictionary of National Biography, 1885–1900, Encyclopædia Britannica 11th edition +3
    + 19 other properties edited (see Wikidata diff for full list)
    "/* wbeditentity-update:0| */ QuickStatements 3.0 [[:toollabs:qs-dev/batch/30848|batch #30848]]: match CERL IDs on the basis of GND (5)"
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