Isaac P. Walker

Isaac Pigeon Walker
United States Senator from Wisconsin
In office June 8, 1848 – March 3, 1855
Preceded by	Position established
Succeeded by	Charles Durkee
Speaker of the House of Representatives of the Wisconsin Territory
In office October 18, 1847 – October 27, 1847
Preceded by	William Shew
Succeeded by	Timothy Burns
Member of the House of Representatives of the Wisconsin Territory for Milwaukee County
In office October 18, 1847 – March 13, 1848 Serving with James Holliday & Asa Kinney
Preceded by	William Shew, Andrew Sullivan, & William W. Brown
Succeeded by	Position abolished
Probate Judge of Milwaukee County
In office January 1847 – June 1848
Preceded by	Clinton Walworth
Succeeded by	James B. Cross
Member of the Illinois House of Representatives from the Vermilion County district
In office December 3, 1838 – November 23, 1840 Serving with Asa Elliott & John H. Murphy
Preceded by	George Barnett & George Scarborough
Succeeded by	John J. Brown, Isaac Froman, & John Canady
Personal details
Born	(1815-11-02)November 2, 1815 Wheeling, Virginia, U.S. (now West Virginia)
Died	March 29, 1872(1872-03-29) (aged 56) Newhall House hotel, Milwaukee, Wisconsin, U.S.
Cause of death	Stroke
Resting place	Forest Home Cemetery, Milwaukee
Political party	Democratic
Spouses	"Miss Yohn" ​ (died 1841)​ Elizabeth Hastings Whitney ​ ​ (m. 1841⁠–⁠1872)​
Children	Lucia Frances Walker (b. 1842; died 1861) Margaret E. (Hamlin) (Parsons) (b. 1844; died 1919) Charles Carroll Walker (b. 1847; died 1852)
Relatives	George H. Walker (brother)

Isaac Pigeon Walker (November 2, 1815 – March 29, 1872) was an American lawyer, Democratic politician, and Wisconsin pioneer. He was one of Wisconsin's first United States senators, serving from 1848 through 1855. In the Senate, he was best known for his support of radical land reform; much of what he proposed was enacted as the Homestead Act of 1862 after he left office. His political career, however, was prematurely ended by the complicated politics of pre-Civil War slavery compromises—Walker was always personally opposed to slavery, but endorsed a compromise on handling the Mexican Cession which was anathema to his anti-slavery Wisconsin electorate.

Before Wisconsin statehood, he served in the House of Representatives of the Wisconsin Territory, and was speaker for one session during the 5th Wisconsin Territorial Assembly. Before coming to Wisconsin, he also served one term in the Illinois House of Representatives.

Isaac P. Walker was a younger brother of George H. Walker, one of the founders of Milwaukee, Wisconsin, and Milwaukee's 5th mayor.