John Wentworth (Illinois politician)

John Wentworth
19th & 21st Mayor of Chicago
In office March 22, 1860[1] – May 6, 1861[2]
Preceded by	John Charles Haines
Succeeded by	Julian Sidney Rumsey
In office March 10, 1857[3] – March 2, 1858[4]
Preceded by	Thomas Dyer
Succeeded by	John Charles Haines
Member of the U.S. House of Representatives from Illinois's 1st district
In office March 4, 1865 – March 3, 1867
Preceded by	Isaac N. Arnold
Succeeded by	Norman B. Judd
Member of the U.S. House of Representatives from Illinois's 2nd district
In office March 4, 1853 – March 3, 1855
Preceded by	Willis Allen
Succeeded by	James H. Woodworth
Member of the U.S. House of Representatives from Illinois's 4th district
In office March 4, 1843 – March 3, 1851
Preceded by	District created
Succeeded by	Richard S. Molony
Personal details
Born	(1815-03-05)March 5, 1815 Sandwich, New Hampshire, U.S.
Died	October 16, 1888(1888-10-16) (aged 73) Chicago, Illinois
Political party	Democratic (1843–1855) Republican (1857)
Spouse	Roxanna Marie Loomis
Residence(s)	Chicago, Illinois

John Wentworth (March 5, 1815 – October 16, 1888), nicknamed Long John, was the editor of the Chicago Democrat, publisher of an extensive Wentworth family genealogy, a two-term mayor of Chicago, and a six-term member of the United States House of Representatives, both before and after his service as mayor.

After growing up in New Hampshire, he joined the migration west and moved to the developing city of Chicago in 1836, where he made his adult life. Wentworth was affiliated with the Democratic Party until 1855; then he changed to the Republican Party. After retiring from politics, he wrote a three-volume genealogy of the Wentworth family in the United States.^[5]