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"): William Hawkins Polk (May 24, 1815 – December 16, 1862) was an American politician and a member of the United States House of Representatives for Tennessee's 6th congressional district from 1851 to 1853.
Relevant evidence: Yes