John Robert Cartwright
12th Chief Justice of Canada (1895–1979)

John Robert Cartwright (March 23, 1895 – November 24, 1979) was a Canadian lawyer and judge who served as Chief Justice of Canada from 1967 until 1970 and as a puisne justice from 1949 to 1967.
Early life
Born in Toronto, Cartwright was the son of James Strachan Cartwright and Jane Elizabeth Young. After graduating from Upper Canada College in 1912, he enrolled at Osgoode Hall Law School and began his articles with Smith, Rae & Greer.
He interrupted his studies in 1914 to serve overseas with the armed forces during the First World War. In 1915, he was wounded twice and for the following two years was an aide-de-camp to three successive generals. He was awarded the Military Cross in 1917.
Legal career
Upon his return to Canada, he resumed his study of law. He was called to the bar in 1920, then joined the firm of Smith, Rae & Greer in Toronto. In 1946, he was named a bencher of the Law Society of Upper Canada, he had the most votes of any candidate.
In 1947, he was counsel for the Government of Canada in the prosecutions that resulted from the findings of the Royal Commission on Spying Activities in Canada, which had been chaired by Justices Robert Taschereau and Roy Kellock.
Begin with the source’s own compact description: “John Robert Cartwright” is 12th Chief Justice of Canada (1895–1979). The dossier treats that line as a proposition to test through John, Robert and Cartwright, not as a finished interpretation.
Why this record matters
The phrase “12th Chief Justice of Canada (1895–1979)” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 14, 2026. The linked authority identifier is Q452496. VIAF identifies the subject as 93251172. 2 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1895, 1979, 1967 and 1970.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. 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
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “John Robert Cartwright”, its source revision and the description used here.
- Expand the search: follow John Robert Cartwright primary sources, John Robert Cartwright archive and John research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “John Robert Cartwright”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “John Robert Cartwright” 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.