William P. Lyon

The Honorable William P. Lyon
7th Chief Justice of the Wisconsin Supreme Court
In office January 4, 1892 – January 1, 1894
Preceded by	Orsamus Cole
Succeeded by	Harlow S. Orton
Justice of the Wisconsin Supreme Court
In office January 20, 1871 – January 1, 1894
Appointed by	Lucius Fairchild
Preceded by	Byron Paine
Succeeded by	Alfred W. Newman
Wisconsin Circuit Court Judge for the 1st Circuit
In office January 1, 1866 – January 20, 1871
Preceded by	David Noggle
Succeeded by	Robert Harkness
12th Speaker of the Wisconsin Assembly
In office January 12, 1859 – January 9, 1861
Preceded by	Frederick S. Lovell
Succeeded by	Amasa Cobb
Member of the Wisconsin State Assembly from the Racine 1st district
In office January 12, 1859 – January 9, 1861
Preceded by	Hermon Warner
Succeeded by	Gilbert Knapp
District Attorney of Racine County
In office January 1, 1854 – January 1, 1858
Preceded by	Lewis Royce
Succeeded by	Champion S. Chase
Personal details
Born	William Penn Lyon (1822-10-28)October 28, 1822 Chatham, New York
Died	April 4, 1913(1913-04-04) (aged 90) San Jose, California
Resting place	Oak Hill Memorial Park San Jose, California
Political party	Republican
Spouse	Adelia Caroline Duncombe ​ ​ (m. 1847; died 1910)​
Children	Clara I. (Hayes) (b. 1857; died 1932)
Profession	lawyer, judge
Signature
Military service
Allegiance	United States
Branch/service	United States Army Union Army
Years of service	1861–1865
Rank	Colonel, USV Brevet Brigadier General, USV
Unit	8th Reg. Wis. Vol. Infantry Army of the Tennessee
Commands	13th Reg. Wis. Vol. Infantry
Battles/wars	American Civil War Operations to Control Missouri Engagement at Fredericktown Battle of Island Number Ten Siege of Corinth Battle of Iuka Second Battle of Corinth Vicksburg campaign Battle of Jackson, Mississippi Battle of Richmond, Louisiana Siege of Vicksburg

William Penn Lyon (October 28, 1822 – April 4, 1913) was an American lawyer, politician, and judge who served as the 7th Chief Justice of the Wisconsin Supreme Court and the 12th Speaker of the Wisconsin State Assembly. He also served as a Union Army officer in the American Civil War.