CACrown ArchivesThe cinema collection
Menu
Research dossier · People & Ideas

Thomas Bonnar

British architect

Correspondence, annotated notebooks and portrait silhouettes prepared for research
People and ideasInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionJun 29, 2026
Entity authorityQ18736953 ↗
Source-derived summary

Thomas Bonnar (d. 1847) was a Scottish interior designer and architect of note, working in the Edinburgh area. He is particularly remembered for his outstanding ceilings.

Thomas was the father of the artist William Bonnar (1800–1853) and the engraver Thomas Bonnar (1810–1873), who collaborated with each other on several works.

The group are also known by the family company name of Bonnar & Co.

Life

Bonnar was born in Edinburgh around 1770, the son of John Bonnar who had created the ceilings in Penicuik House. His family lived in a new house at 6 South St David Street during his teenage years.

He was appointed as a burgess of the city in 1795 and a "sworn measurer" in 1807 and Superintendent of Works for the city in 1809, operating from the Magdalene Chapel in the Cowgate. From 1810 he acted as architect and surveyor to George Heriot’s School. He lost all public posts in January 1819 due to a bungled execution on 30 December (part of his wide scope of duties) which ended in a public riot.

Editorial summary

The public source identifies “Thomas Bonnar” as british architect. This brief keeps that definition visible, then builds a research path around Thomas, Bonnar and British.

Editorial reviewA useful biographical orientation record, particularly for establishing names, roles and a first chronology. The current lead gives the account dated anchors—1847, 1800, 1853, 1810—that can be checked directly. The linked authority record independently contributes the date 1775. Its value is orientation rather than verdict, with Thomas, Bonnar and British providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “Thomas Bonnar”, the useful work is to connect “british architect” to the records capable of establishing context and consequence.

Evidence profile

The entry’s evidential value lies in the named roles, institutions and publications that can be tested against primary documentation. The source revision retrieved here is dated Jun 29, 2026. The linked authority identifier is Q18736953. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1847, 1800, 1853 and 1810.

Critical limits

A concise life account rarely captures disputed attribution, private networks or the changing language used to describe a career. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Read biographical claims against dates, named institutions and the cited references. Distinguish a subject’s later reputation from evidence produced during their lifetime.

Best used for
  • Establishing names and roles
  • Building a first chronology
  • Locating cited institutions
Verify next

Personal papers, civil or court records, institutional files and the scholarship cited by the source.

Three-step research path

  1. Establish the record: confirm the title “Thomas Bonnar”, its source revision and the description used here.
  2. Expand the search: follow Thomas Bonnar primary sources, Thomas Bonnar archive and Thomas research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Thomas Bonnar”?
  2. Which primary records establish identity, chronology and institutional ties?
  3. Which claims depend on a single source or contested interpretation?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “Thomas Bonnar” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.