(Reuters) - Eleanor Roosevelt was named the greatest first lady of the United States in a survey of historians released on Saturday, while Michelle Obama, in fifth place, edged out Hillary Clinton in sixth. Roosevelt, whose husband, Franklin, served as president from 1933 to 1945, has come up No. 1 each of the five times the survey has been conducted by Siena College Research Institute since 1982. In the top finishers after Roosevelt were Abigail Adams, Jacqueline Kennedy and Dolly Madison. Least impressive, according to the survey, was Jane Pierce, the wife of 14th U.S. president, Franklin Pierce.