Loyal Edwin Knappen (January 27, 1854 – May 14, 1930) was a United States circuit judge of the United States Court of Appeals for the Sixth Circuit and the United States Circuit Courts for the Sixth Circuit and previously was a United States district judge of the United States District Court for the Western District of Michigan.

Loyal Edwin Knappen
Born 1854 in Hastings, MI
Died 1930 in Grand Rapids, MI
FJC ID: 1295
Career output and lasting influence
Opinions attributed per year · peak 12/year
Later decisions citing those opinions, per year · peak 25/year
Michigan Western District Court · 1906–1910U.S. Circuit Courts for the Sixth Circuit · 1910–1911Sixth Circuit Court of Appeals · 1910–1930
Both charts share the same year axis. Opinion counts include only opinions in our corpus attributed to this judge so far — a year at zero can mean an attribution gap, not judicial silence. Influence typically outlasts the career: citations keep climbing after the last opinion.
- Gender
- Male
- Race
- White
Prior employment
- Conference of Senior Circuit Judges (now Judicial Conference of the United States)Member · 1922–1923
- Private practice, Grand Rapids, Michigan1888–1906
- Private practice, Hastings, Michigan1875–1888
- Barry County, MichiganProsecutor · 1879–1883
Appointments
1910–1911 · Appointed by William H. Taft (Republican)Term ended: Abolition of Court
1910–1930 · Appointed by William H. Taft (Republican)Term ended: Death
1906–1910 · Appointed by Theodore Roosevelt (Republican)Term ended: Appointment to Another Judicial Position
Education
- University of MichiganM.A. · 1876
- Read law1875
- University of MichiganB.A. · 1873