Question: who was the spouse of the seventh president of the U.S.?

full_context: Document 1: Separation of powers under the United States Constitution: Throughout America's history dominance of one of the three branches has essentially been a see-saw struggle between Congress and the president. Both have had periods of great power and weakness such as immediately after the Civil War when republicans had a majority in Congress and were able to pass major legislation and shoot down most of the president's vetoes. They also passed acts to essentially make the president subordinate to Congress, such as the Tenure of Office Act. Johnson's later impeachment also cost the presidency much political power. However the president has also exercised greater power largely during the 20th century. Both Roosevelts greatly expanded the powers of the president and wielded great power during their terms.
Document 2: McKamie Farmhouse: The McKamie Farmhouse was a farmhouse located in Waxhaws, North Carolina, and is one of two disputed birthplaces of Andrew Jackson, the other being in South Carolina.
Document 3: Rachel Jackson: Rachel Jackson ("née" Donelson; June 15, 1767 – December 22, 1828) was the wife of Andrew Jackson, the 7th President of the United States. She lived with him at their home at The Hermitage, where she died just days after his election and before his inauguration in 1829—therefore she never served as First Lady, a role assumed by her niece, Emily Donelson.
Document 4: Separation of powers under the United States Constitution: Some of Jackson's successors made no use of the veto power, while others used it intermittently. It was only after the Civil War that presidents began to use the power to truly counterbalance Congress. Andrew Johnson, a Democrat, vetoed several Reconstruction bills passed by the "Radical Republicans." Congress, however, managed to override fifteen of Johnson's twenty-nine vetoes. Furthermore, it attempted to curb the power of the presidency by passing the Tenure of Office Act. The Act required Senate approval for the dismissal of senior Cabinet officials. When Johnson deliberately violated the Act, which he felt was unconstitutional (Supreme Court decisions later vindicated such a position), the House of Representatives impeached him; he was acquitted in the Senate by one vote.
Document 5: Daniel Smith Donelson: Daniel Smith Donelson (June 23, 1801 – April 17, 1863) was a Tennessee politician and soldier. The historic river-port of Fort Donelson was named for him as a Brigadier in the Tennessee militia, early in the American Civil War, in which he went on to serve as a Confederate general, notably at Perryville and Stones River. He was the nephew of America's seventh president, Andrew Jackson.
Document 6: Mary Harrison McKee: Mary Scott Harrison McKee (April 3, 1858 – October 28, 1930) was the only daughter of President Benjamin Harrison and his wife Caroline Scott Harrison. After her mother died in 1892, McKee served as her father's "de facto" First Lady for the remainder of his term.
Document 7: Separation of powers under the United States Constitution: The first six presidents of the United States did not make extensive use of the veto power: George Washington only vetoed two bills, James Monroe one, and John Adams, Thomas Jefferson and John Quincy Adams none. James Madison, a firm believer in a strong executive, vetoed seven bills. None of the first six Presidents, however, used the veto to direct national policy. It was Andrew Jackson, the seventh President, who was the first to use the veto as a political weapon. During his two terms in office, he vetoed twelve bills—more than all of his predecessors combined. Furthermore, he defied the Supreme Court in enforcing the policy of ethnically cleansing Native American tribes ("Indian Removal"); he stated (perhaps apocryphally), "John Marshall has made his decision. Now let him enforce it!"
Document 8: Separation of powers under the United States Constitution: Johnson's impeachment was perceived to have done great damage to the presidency, which came to be almost subordinate to Congress. Some believed that the president would become a mere figurehead, with the Speaker of the House of Representatives becoming a de facto Prime Minister. Grover Cleveland, the first Democratic President following Johnson, attempted to restore the power of his office. During his first term, he vetoed over four hundred bills—twice as many bills as his twenty-one predecessors combined. He also began to suspend bureaucrats who were appointed as a result of the patronage system, replacing them with more "deserving" individuals. The Senate, however, refused to confirm many new nominations, instead demanding that Cleveland turn over the confidential records relating to the suspensions. Cleveland steadfastly refused, asserting, "These suspensions are my executive acts ... I am not responsible to the Senate, and I am unwilling to submit my actions to them for judgment." Cleveland's popular support forced the Senate to back down and confirm the nominees. Furthermore, Congress finally repealed the controversial Tenure of Office Act that had been passed during the Johnson Administration. Overall, this meant that Cleveland's Administration marked the end of presidential subordination.
Document 9: Andrew Johnson National Cemetery: The Andrew Johnson National Cemetery is a United States National Cemetery on the grounds of the Andrew Johnson National Historic Site in Greeneville, Tennessee. Established in 1906, the cemetery was built around the resting place of Andrew Johnson, the 17th President of the United States, and holds more than two thousand graves.
Document 10: Separation of powers under the United States Constitution: Executive power is vested, with exceptions and qualifications, in the President. By law (Section 2.) the president becomes the Commander in Chief of the Army and Navy, Militia of several states when called into service, has power to make treaties and appointments to office "with the Advice and Consent of the Senate," receive Ambassadors and Public Ministers, and "take care that the laws be faithfully executed" (Section 3.) By using these words, the Constitution does not require the president to personally enforce the law; rather, officers subordinate to the president may perform such duties. The Constitution empowers the president to ensure the faithful execution of the laws made by Congress and approved by the President. Congress may itself terminate such appointments, by impeachment, and restrict the president. Bodies such as the War Claims Commission, the Interstate Commerce Commission and the Federal Trade Commission—all quasi-judicial—often have direct Congressional oversight.
Document 11: Separation of powers: In the United States Constitution, Article 1 Section I gives Congress only those ``legislative powers herein granted ''and proceeds to list those permissible actions in Article I Section 8, while Section 9 lists actions that are prohibited for Congress. The vesting clause in Article II places no limits on the Executive branch, simply stating that,`` The Executive Power shall be vested in a President of the United States of America.'' The Supreme Court holds ``The judicial Power ''according to Article III, and it established the implication of Judicial review in Marbury v. Madison under the Marshall court.
Document 12: Sarah Childress Polk: Sarah Polk ("née" Childress; September 4, 1803 – August 14, 1891) was the First Lady of the United States from 1845 to 1849. She was the wife of the 11th President of the United States, James K. Polk.
Document 13: Separation of powers under the United States Constitution: Several twentieth-century presidents have attempted to greatly expand the power of the presidency. Theodore Roosevelt, for instance, claimed that the president was permitted to do whatever was not explicitly prohibited by the law—in direct contrast to his immediate successor, William Howard Taft. Franklin Delano Roosevelt held considerable power during the Great Depression. Congress had granted Franklin Roosevelt sweeping authority; in Panama Refining v. Ryan, the Court for the first time struck down a Congressional delegation of power as violative of the doctrine of separation of powers. The aforementioned Schechter Poultry Corp. v. United States, another separation of powers case, was also decided during Franklin Roosevelt's presidency. In response to many unfavorable Supreme Court decisions, Roosevelt introduced a "Court Packing" plan, under which more seats would be added to the Supreme Court for the president to fill. Such a plan (which was defeated in Congress) would have seriously undermined the judiciary's independence and power.
Document 14: Separation of church and state in the United States: Jefferson and James Madison's conceptions of separation have long been debated. Jefferson refused to issue Proclamations of Thanksgiving sent to him by Congress during his presidency, though he did issue a Thanksgiving and Prayer proclamation as Governor of Virginia. Madison issued four religious proclamations while President, but vetoed two bills on the grounds they violated the first amendment. On the other hand, both Jefferson and Madison attended religious services at the Capitol. Years before the ratification of the Constitution, Madison contended "Because if Religion be exempt from the authority of the Society at large, still less can it be subject to that of the Legislative Body." After retiring from the presidency, Madison wrote of "total separation of the church from the state." " "Strongly guarded as is the separation between Religion & Govt in the Constitution of the United States," Madison wrote, and he declared, "practical distinction between Religion and Civil Government is essential to the purity of both, and as guaranteed by the Constitution of the United States." In a letter to Edward Livingston Madison further expanded, "We are teaching the world the great truth that Govts. do better without Kings & Nobles than with them. The merit will be doubled by the other lesson that Religion flourishes in greater purity, without than with the aid of Govt." Madison's original draft of the Bill of Rights had included provisions binding the States, as well as the Federal Government, from an establishment of religion, but the House did not pass them.[citation needed]
Document 15: Andrew Johnson National Historic Site: The cemetery also includes the interments of Johnson's wife, Eliza McCardle Johnson, and son Brigadier General Robert Johnson Henderson. David T. Patterson, a United States Senator from Tennessee, and his son Andrew J. Patterson, who was instrumental in securing historic designation for the Greeneville properties associated with Andrew Johnson, were among others buried in the cemetery. The site was authorized by Congress as a U.S. National Monument in 1935, established on April 27, 1942, and redesignated a National Historic Site on December 11, 1963.
ground_truth: Rachel Jackson
sub_queries: Who was the seventh President of the United States? Answer: Andrew Jackson
Andrew Jackson >> spouse Answer: Rachel Jackson