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Portrait of Frank Sigel Dietrich, circuit judge of the U.S. Court of Appeals for the Ninth Circuit
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Historical · U.S. Court of Appeals for the Ninth Circuit

Frank Sigel Dietrich

Former Circuit Judge · U.S. Court of Appeals for the Ninth Circuit · 1927–1930 · Appointed by Calvin Coolidge

Frank Sigel Dietrich served as a circuit judge of the U.S. Court of Appeals for the Ninth Circuit (1927–1930). Dietrich was appointed by Calvin Coolidge.

Key facts

Full name
Frank Sigel Dietrich
Court
U.S. Court of Appeals for the Ninth Circuit
Office
Circuit Judge (U.S. Court of Appeals)
Status
Former circuit judge
Duty status
Not serving
Appointment
Senate-confirmed
FJC seat
CA90303
Tenure
1927–1930
Confirmed
1927-01-03
Born
1863-01-23
Died
1930-10-02
First year on the bench
1927
Dataset version
1.20260711

Appointment & service record

  • U.S. Court of Appeals for the Ninth Circuit · 1927–1930

    Seat
    CA90303
    Appointment
    Senate-confirmed
    Appointing president
    Calvin Coolidge
    Confirmed
    1927-01-03
    Commissioned
    1927-01-03
    Senior status

Court, FJC seat, appointment type (Senate-confirmed or recess), appointing president, confirmation and commission dates, and senior-status date are drawn from the Federal Judicial Center Biographical Directory and Wikidata.[1][2][3]

Sources

  1. [1]https://www.fjc.gov/node/1380046fjc · retrieved 2026-07-11
  2. [2]https://www.fjc.gov/history/judges/biographical-directory-article-iii-federal-judges-exportfjc-directory · retrieved 2026-07-11
  3. [3]https://www.wikidata.org/wiki/Q5489568Wikidata · retrieved 2026-07-11

Biographical narrative

1,109 words · sourced from the Wikipedia REST extract

Frank Sigel Dietrich was a United States circuit judge who served on the United States Court of Appeals for the Ninth Circuit from 1927 until his death in 1930. Born in Kansas in 1863 to German immigrant parents, he pursued careers in education and law before entering the federal judiciary. President Theodore Roosevelt appointed him to the United States District Court for the District of Idaho in 1907, where he served for two decades before President Calvin Coolidge, a Republican, elevated him to the Ninth Circuit in 1927. His tenure on the appellate court was cut short by his death in 1930.

Frank Sigel Dietrich was born on January 23, 1863, near Ottawa in Franklin County, Kansas, at a location known as the Dietrich Cabin. His parents had emigrated from the German Confederation, the political entity that would later become unified Germany, arriving in the United States in 1855. His father, Jacob Dietrich, established himself as a farmer in Kansas. Tragedy struck the family early when Jacob Dietrich died less than a year after his son Frank's birth. The child's given name was selected to honor Franz Sigel, a general who served in the American Civil War, reflecting the family's connection to their adopted country during a pivotal period in its history.

Dietrich pursued higher education at Brown University in Rhode Island, where he earned an Artium Baccalaureus degree in 1887. He continued his studies at the same institution, receiving an Artium Magister degree in 1890. Following his graduate education, Dietrich entered the academic profession, accepting a position at Ottawa University in Kansas. There he taught Latin, history, and political science, contributing to the education of students in the liberal arts and social sciences. During this period, he also undertook the study of law through the traditional method of reading law, which allowed aspiring attorneys to prepare for bar admission through apprenticeship and self-study rather than formal law school attendance. He was admitted to the bar in 1891.

After establishing himself as a practicing attorney, Dietrich transitioned from academia to corporate legal work. From 1899 to 1907, he served as an attorney for the Union Pacific Railroad, one of the major railroad corporations that had played a central role in connecting the American West to the rest of the nation. This position would have involved him in the complex legal matters surrounding railroad operations, land rights, commercial transactions, and regulatory compliance during a period of significant growth and consolidation in the railroad industry. His work for the Union Pacific provided him with substantial experience in federal law and interstate commerce matters that would prove relevant to his later judicial career.

Federal appellate service

Dietrich's federal judicial career began at the district court level. On March 19, 1907, President Theodore Roosevelt gave him a recess appointment to the United States District Court for the District of Idaho, filling a vacancy that had been created by the departure of Judge James H. Beatty. A recess appointment allowed the president to fill the position temporarily while the Senate was not in session. Later that year, on December 3, 1907, President Roosevelt formally nominated Dietrich to the same position. The United States Senate confirmed the nomination on December 17, 1907, and Dietrich received his commission on the same day, securing his position on the district court. He would serve in this capacity for nearly two decades, presiding over federal cases in Idaho and contributing to the administration of justice in the district.

Dietrich's service on the district court concluded when he was elevated to the appellate bench. On December 22, 1926, President Calvin Coolidge, a Republican, nominated him to a seat on the United States Court of Appeals for the Ninth Circuit. This vacancy had been created by Judge Wallace McCamant's departure from the court. The Senate moved quickly on the nomination, confirming Dietrich on January 3, 1927. He received his commission on the same day and assumed his duties on the appellate court. His service on the district court formally terminated on January 18, 1927, as he transitioned to his new role on the Ninth Circuit.

As a circuit judge, Dietrich would have participated in three-judge panels reviewing appeals from the federal district courts within the Ninth Circuit's jurisdiction, which encompassed several western states including his home state of Idaho. The position represented the culmination of his legal career, placing him on one of the thirteen federal courts of appeals that form the intermediate appellate tier of the federal judiciary, below only the Supreme Court of the United States.

Dietrich's tenure on the Ninth Circuit was brief. He died of a heart attack on October 2, 1930, in Boise, Idaho, bringing his appellate service to an end after approximately three and a half years. He was survived by his wife Martha, who had been born in 1873 and would live until 1958. The couple was interred together at Morris Hill Cemetery in Boise.

Jurisprudence and legacy

The relatively short duration of Dietrich's service on the Ninth Circuit, combined with the passage of time since his tenure, means that detailed records of his specific judicial opinions and legal philosophy are not widely documented in contemporary sources. His two decades on the district court and his years on the appellate bench would have involved him in the full range of federal legal questions that came before the courts during the early twentieth century, a period that saw significant developments in federal jurisdiction, constitutional interpretation, and the expansion of federal regulatory authority.

Dietrich's career reflected the traditional path of many federal judges of his era, combining academic training in the liberal arts, practical legal experience in private practice, and service on both the trial and appellate levels of the federal judiciary. His progression from teaching classical languages and social sciences to practicing railroad law and then to the federal bench illustrated the diverse backgrounds from which the federal judiciary drew its members during this period.

One tangible legacy of Dietrich's judicial service is geographic. The town of Dietrich in rural Lincoln County, Idaho, was named in his honor shortly after he became a federal judge. This naming reflected the respect and recognition he had earned in the state where he served for the majority of his judicial career, and it represents a lasting connection between his name and the community he served.

His career spanned a transformative period in American legal history, from the late nineteenth century through the first three decades of the twentieth century, during which the federal courts addressed questions arising from industrialization, westward expansion, and evolving interpretations of federal power and individual rights.

Sources & provenance

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Explore the federal judiciary

The U.S. Courts of Appeals are the intermediate appellate courts of the federal judiciary — thirteen circuits sitting between the district courts and the Supreme Court. Browse the full roster of judges on the U.S. Court of Appeals for the Ninth Circuit, or explore how the appointed federal judiciary fits into the federal government.