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30th Congress (1847–1849)

Congressional Profile

Total Membership:

  • 230 Representatives
  • 1 Delegate

Party Divisions:*

  • 110 Democrats
  • 116 Whigs
  • 2 Independent Democrats
  • 1 American
  • 1 Independent

*Party division totals are based on election day results.

Robert Charles Winthrop/tiles/non-collection/s/speaker_Winthrop_2005_16_18_1.xml Collection of the U.S. House of Representatives
About this object
Massachusetts Representative Robert Winthrop briefly served as Speaker before serving in the Senate.

Congress Overview

Democrats retained control of the Senate after the wartime 1846 elections, but Whigs took the House. They submitted a bevy of antiwar petitions including one by Illinois Representative Abraham Lincoln, who served his single congressional term in the 30th Congress (1847–1849). The Mexican–American War ended with the 1848 Treaty of Guadalupe Hidalgo, which added much of the present Southwest to the country. Shortly after the war ended, Massachusetts Representative John Quincy Adams, dubbed “Old Man Eloquent,” died in the Speaker’s Room in the Capitol after falling ill on the House Floor.

Member Information

  • Biographical Directory of the U.S. Congress, (1774–2005), Official Annotated Membership Roster by State with Vacancy and Special Election Information for the 30th Congress. [PDF]
  • Learn more about the House of Representatives with an interactive map

Learn more about the People of the People's House

Leadership & Officers

Speaker of the House:
Robert C. Winthrop (W–Massachusetts)
Clerk of the House:
Benjamin French
Sergeant at Arms:
Newton Lane
Chaplain of the House:
Ralph Gurley – Presbyterian
Robert E. Horner
John M. Johnson

To view complete lists of individuals who have served in these leadership and official positions since the 1st Congress, visit the People section