20 things about U.S. presidents

Here are 20 things, from Ian Randal Strock's "The Presidential Book of Lists" you may not have known about U.S. presidents:

1. Four presidents never held an elective office before being elected: Zachary Taylor, Ulysses S. Grant, Herbert Hoover and Dwight D. Eisenhower.

2. William Henry Harrison caught pneumonia while giving a long inaugural speech in bad weather on March 4, 1841. He died just after midnight on April 4, 1841, having served one month.

3. David Atchinson was technically president for one day in 1849, when the inaugural ceremony fell on a Sunday, and President-elect Zachary Taylor refused to accept the oath of office until the next day. Atchinson was president pro tempore of the Senate, and next in line.

4. Recent evidence suggests that Chester Arthur may have been born in Canada, and thus technically not eligible to serve as U.S. president. His birthplace was always claimed as Vermont. But since he's long dead, the point is moot.

5. The name James was shared by six Presidents: Madison, Monroe, Polk, Buchanan, Garfield and Carter.

6. Andrew Johnson had no formal education. He taught himself to read as an adult.

7. Only four presidential candidates have won more than 60 percent of the popular vote.

8. The most prolific president was John Tyler, who fathered 15 children (eight sons and seven daughters) with two wives.

9. Ten presidents were Episcopalians: George Washington, James Madison, James Monroe, William Henry Harrison, Zachary Taylor, Franklin Pierce, Chester Alan Arthur, Franklin Delano Roosevelt, Gerald Ford and George H.W. Bush.

10. Ulysses S. Grant changed his name from Hiram Ulysses Grant because he did not want his West Point gear branded with the initials HUG.

11. Grover Cleveland's second wife was 27 years younger than her husband and had been his ward since the age of 11, when her father, Cleveland's former law partner, died.

12. Abraham Lincoln is the only president to have worn a beard with no mustache.

13. John Quincy Adams and Theodore Roosevelt were 14th cousins, once removed.