Idaho Supreme Court / Joined 1891 / Served to 1917

Isaac N. Sullivan

Justice, Idaho Supreme Court

Isaac N. Sullivan was a Justice of the Idaho Supreme Court (5 judges, selected by nonpartisan election), who joined the court in 1891. Opinions & record ↓ Sources ↓

Tenure
1891–1917 · 25 yrs

Judicial service

YearCourtAppointed byVote
1891Idaho Supreme Court––

Judicial Record

In our data, Sullivan authored 590 published opinions for the court (1891–1916), plus 41 dissents and 22 concurrences. Most cited: Clark v. Rossier (62 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. 682 of these were attributed to Sullivan 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

YearCaseCitationCited
1904Clark v. Rossier†10 Idaho 34862
1909Bayhouse v. Urquides· Separate†17 Idaho 28656
1907Valley Lumber & Manufacturing Co. v. Driessel†13 Idaho 66251
1913State v. O'Neil†24 Idaho 58249
1902Pioneer Irrigation District v. Bradley†8 Idaho 31049
1908Knowles v. New Sweden Irrigation District· Separate†16 Idaho 21748
1906Donovan v. Miller†12 Idaho 60043
1906Bank of Commerce, Ltd. v. Baldwin· Concurrence†12 Idaho 20243
1915Ingard v. Barker· Concurrence†27 Idaho 12442
1915Washington State Sugar Co. v. Goodrich· Separate†27 Idaho 2641
1906In re Prout· Dissent†12 Idaho 49440
1910Mix v. Board of County Commissioners†18 Idaho 69539
1904Hard v. Boise City Irrigation & Land Co.· Dissent†9 Idaho 58938
1906Day v. Day†12 Idaho 55637
1911Jones v. City of Caldwell†20 Idaho 535

Showing the 15 most-cited of 690 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 Idaho Supreme Court reach the bench?
The court's current selection method is nonpartisan election.
Which court was Isaac N. Sullivan on?
Isaac N. Sullivan was a Justice of the Idaho Supreme Court.

Sources

Each fact on this page traces to a primary public record.

How we source & reconcile data → Data & Sources

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25 years on the Idaho Supreme Court. Data as of 2026-03-31. Informational only; verify against the primary source before relying. Not a consumer report (FCRA).