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?
Related documents: [0]  [DOC] James Knox Polk (November 2, 1795 – June 15, 1849) was the 11th President of the United States (1845–49). He previously served as the 13th Speaker of the House of Representatives and as Governor of Tennessee. A protege of Andrew Jackson, Polk was a member of the Democratic Party and an adherent of Jacksonian democracy and Manifest Destiny. During his presidency, the United States expanded significantly with the annexation of Republic of Texas, the Oregon Treaty, and the conclusion of the Mexican-American War. [END] 
[1]  [DOC] 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. He was the younger brother of President James K. 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. [END] 
Answer: 
1795
1795