John de László

British businessman, son of Philip de László
Person human Q75534000
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John de László

Summary

John de László is a human[1]. He was born in London[2]. He was born on +1912-10-20T00:00:00Z[3]. He died in Mallorca[4]. He died on +1990-01-01T00:00:00Z[5]. He worked as a businessperson[6].

Key Facts

  • John de László was born in London[2].
  • John de László passed away in Mallorca[4].
  • John de László was born on +1912-10-20T00:00:00Z[3].
  • John de László died on +1990-01-01T00:00:00Z[5].
  • John de László died on +1990-10-04T00:00:00Z[7].
  • John de László's father was Philip de László[8].
  • John de László's mother was Lucy Guinness[9].
  • Among John de László's spouses was Rosemary Pratt, Marchioness Camden[10].
  • Among John de László's spouses was Juliet Hermione Slessor[11].
  • Among John de László's spouses was Peggy Cruise[12].
  • A child of John de László was Charlotte de László[13].
  • A child of John de László was Piers de László[14].
  • A child of John de László was Martin de László[15].
  • John de László held citizenship in United Kingdom[16].
  • John de László's professions included businessperson[6].
  • John de László's image is recorded as Philip alexius de laszlo john de laszlo and a goldfish bowl d6300426094218).jpg[17].
  • John de László is recorded as male[18].
  • John de László's instance of is recorded as human[19].
  • John de László's family name is recorded as László[20].
  • John de László's given name is recorded as John[21].
  • John de László's given name is recorded as Adolphus[22].
  • John de László's depicted by is recorded as John de László and a Goldfish Bowl[23].
  • John de László's Geni.com profile ID is recorded as 5421895172220121872[24].
  • John de László's WikiTree person ID is recorded as De_László-1[25].
  • John de László's The Peerage person ID is recorded as p19939.htm#i199383[26].

Body

Origins and Family

John de László's place of birth was London[2]. He was born on +1912-10-20T00:00:00Z[3]. His father was Philip de László[8]. His mother was Lucy Guinness[9].

Career and Affiliations

John de László's professions included businessperson[6].

Personal Life

Spouses include Rosemary Pratt, Marchioness Camden[10], a painter[27], 1921–2004[28]; Juliet Hermione Slessor[11], 1924–2019[29]; and Peggy Cruise[12], b. 1915[30]. Children include Charlotte de László[13]; Piers de László[14]; and Martin de László[15], 1943–2017[31].

Death and Burial

Recorded date of death include +1990-01-01T00:00:00Z[5] and +1990-10-04T00:00:00Z[7]. John de László died in Mallorca[4].

FAQs

Where was John de László born?

Born in London[2], John de László…

Where did John de László die?

John de László passed away in Mallorca[4].

Who were John de László's parents?

John de László's father was Philip de László[8]. John de László's mother was Lucy Guinness[9].

Who was John de László married to?

John de László's spouses include Rosemary Pratt, Marchioness Camden[10], Juliet Hermione Slessor[11], and Peggy Cruise[12].

What did John de László do for work?

John de László worked as businessperson[6].

References

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

Direct Wikidata claims

  1. [17] . wikidata.org.
  2. [2] . Philip de László Archive Trust. Retrieved . delaszlocatalogueraisonne.com. Provenance: wikidata.org.
  3. [4] . Philip de László Archive Trust. Retrieved . delaszlocatalogueraisonne.com. Provenance: wikidata.org.
  4. [18] . The Peerage. wikidata.org.
  5. [8] . The Peerage. wikidata.org.
  6. [9] . The Peerage. wikidata.org.
  7. [10] . Retrieved . wikidata.org.
  8. [11] . Retrieved . wikidata.org.
  9. [12] . Retrieved . wikidata.org.
  10. [16] . wikidata.org.
  11. [19] . wikidata.org.
  12. [13] . The Peerage. wikidata.org.
  13. [14] . The Peerage. wikidata.org.
  14. [15] . The Peerage. wikidata.org.
  15. [6] . Philip de László Archive Trust. Retrieved . delaszlocatalogueraisonne.com. Provenance: wikidata.org.
  16. [3] . WikiTree. Retrieved . wikidata.org.
  17. [5] . The Peerage. wikidata.org.
  18. [7] . WikiTree. Retrieved . wikidata.org.
  19. [20] . wikidata.org.
  20. [21] . wikidata.org.
  21. [22] . wikidata.org.
  22. [23] . wikidata.org.
  23. [24] . wikidata.org.
  24. [25] . wikidata.org.
  25. [26] . Retrieved . wikidata.org.

Inline context (facts about related entities)

  1. [27] . Wikidata. wikidata.org. → on this site
  2. [28] . Wikidata. wikidata.org. → on this site
  3. [29] . Wikidata. wikidata.org. → on this site
  4. [30] . Wikidata. wikidata.org. → on this site
  5. [31] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. 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 de László. Retrieved May 3, 2026, from https://4ort.xyz/entity/john-de-l-szl-
MLA “John de László.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/john-de-l-szl-.
BibTeX @misc{4ortxyz_john-de-l-szl-_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{John de László}}, year = {2026}, url = {https://4ort.xyz/entity/john-de-l-szl-}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): John de László — https://4ort.xyz/entity/john-de-l-szl- (retrieved 2026-05-03)

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