Who was First Lady during Zachary Taylor's presidency?

Which president served from 1849 to 1850? In what year did Zachary Taylor first take office as President? In which state was Zachary Taylor born? Under which president did Millard Fillmore serve as Vice President? Margaret Taylor was married to which president? Which number president was Millard Fillmore? Who succeeded Millard Fillmore as President of the United States? Who was President immediately before Millard Fillmore?