OVERVIEW:

BORN:
February 19, 1821
Lexington, Kentucky

DIED:
July 8, 1875 (age 54)
St. Louis, Missouri

EDUCATION:
University of North Carolina, Chapel Hill
Princeton College (graduated in 1841)
Studied Law at Transylvania University

POLITICAL PARTY:
Democratic (before 1848, 1866–75)
Free Soil (1848–54)
Republican (1854–66)

HIGHLIGHTS:
1842:
Admitted to the Bar
1843:
Began Practicing Law in St. Louis, Missouri
1852-1856:
Member of the Missouri House of Representatives
1857-1859:
U.S. House of Representatives (R-MO)
June 8-25, 1860:
U.S. House of Representatives (R-MO)
1861-1862:
U.S. House of Representatives (R-MO)
July 1862:
Resigned from the House of Representatives to serve as a colonel in the Union Army
1863-1864:
U.S. House of Representatives (R-MO)
1868:
Unsuccessful Democratic Candidate for Vice President 
1870:
Member of the Missouri House of Representatives
1871-1873:
U.S. Senator (D-MO)
1874:
Missouri Insurance Commissioner 

RESOURCES:
Biographical Directory of Congress
U.S. House of Representatives
Architect of the Capitol
Princeton University
Wikipedia