Complex sentence: Giddings served in the Ohio House of Representatives from 1826-1828, and from December 1838 until March 1859 was a member of the United States House of Representatives, representing first Ohio's Sixteenth District until 1843 and then Ohio's Twentieth District until 1859.
Split into simpler sentences: Giddings served in the Ohio House of Representatives from 1826-1828. From December 1838 until March 1859 he was a member of the United States House of Representatives, representing first Ohio's Sixteenth District until 1843 and then Ohio's Twentieth District until 1859.