Question: In what year was the president whose younger brother was a member of the United States House of Representatives for Tennessee's 6th congressional district from 1851 to 1853 born?
Sentence (from "William Hawkins Polk"): Prior to his election to Congress, he had been a member of the Tennessee House of Representatives (1841–1845), served as U.S. Minister to the Kingdom of the Two Sicilies (1845–1847), and fought as a major in the Mexican-American War.
Relevant evidence: No