Henry X. O'Brien
Henry X. O'Brien was a Justice of the Supreme Court of Pennsylvania, who joined the court in 1962. Opinions & record ↓ Sources ↓
- Lived
- 1903–1990
- Tenure
- 1962–1983 · 21 yrs
Judicial service
| Year | Court | Appointed by | Vote |
|---|---|---|---|
| 1962 | Supreme Court of Pennsylvania | – | – |
Education
| Duquesne University | ||
| Gannon University | ||
| Saint Francis Medical Center College of Nursing |
Judicial Record
In our data, O'Brien authored 657 published opinions for the court (1962–1982), plus 19 dissents and 4 concurrences. Most cited: Commonwealth v. McClendon (771 citations).
Published, precedential opinions from the CourtListener corpus. Counts and rankings are objective and recomputable: how we count. We describe the record, not the judge. 680 of these were attributed to O'Brien by a unique court-, date-, and surname-match against our roster (marked ), because CourtListener recorded no author for them. Each links to the official text to verify. How we match.
Selected opinions
| Year | Case | Citation | Cited |
|---|---|---|---|
| 1981 | Commonwealth v. McClendon· Dissent† | 434 A.2d 1185 | 771 |
| 1978 | Mayle v. Pennsylvania Department of Highways· Dissent† | 388 A.2d 709 | 385 |
| 1981 | Laudenberger v. Port Auth. of Allegheny† | 436 A.2d 147 | 296 |
| 1963 | Chambers v. Montgomery† | 411 Pa. 339 | 229 |
| 1968 | Commonwealth Ex Rel. Butler v. Rundle† | 429 Pa. 141 | 222 |
| 1979 | Commonwealth v. DeJohn† | 403 A.2d 1283 | 216 |
| 1975 | Singer v. Sheppard· Dissent† | 346 A.2d 897 | 206 |
| 1982 | Commonwealth v. Stanley· Dissent† | 446 A.2d 583 | 192 |
| 1968 | Harleysville Mutual Casualty Co. v. Blumling† | 429 Pa. 389 | 172 |
| 1975 | Commonwealth v. McCutchen† | 343 A.2d 669 | 165 |
| 1981 | Anthony v. Koppers Co., Inc.· Dissent† | 436 A.2d 181 | 145 |
| 1970 | Commonwealth Ex Rel. Smith v. Myers† | 438 Pa. 218 | 143 |
| 1981 | Commonwealth v. Nazarovitch† | 436 A.2d 170 | 141 |
| 1975 | Commonwealth v. Triplett† | 341 A.2d 62 | 139 |
| 1974 | Commonwealth v. Demmitt† | 456 Pa. 475 | 139 |
Showing the 15 most-cited of 680 authored opinions in our data. “Cited” is inbound citations across the CourtListener corpus. Case links open the ruling’s full text (CourtListener) or its page here; read the methodology and verify against the primary source.
Questions & answers
- How do judges of the Supreme Court of Pennsylvania reach the bench?
- The court's current selection method is partisan election.
- Which court was Henry X. O'Brien on?
- Henry X. O'Brien was a Justice of the Supreme Court of Pennsylvania.
Sources
Each fact on this page traces to a primary public record.
- CourtListener / Free Law Project
- CourtListener bulk data (Free Law Project): authored opinions & citation counts
How we source & reconcile data → Data & Sources
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21 years on the Supreme Court of Pennsylvania. Data as of 2026-03-31. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).