| Surname | Origin | % Correct |
|---|---|---|
| Adams | England | 97%
|
| Eisenhower | Germany | 83%
|
| Cleveland | England | 78%
|
| Bush | England | 76%
|
| Carter | England | 76%
|
| Clinton | England | 75%
|
| Ford | England | 74%
|
| Harrison | England | 74%
|
| Jackson | England | 72%
|
| Lincoln | England | 72%
|
| Kennedy | Ireland | 72%
|
| Coolidge | England | 71%
|
| Garfield | England | 71%
|
| Johnson | England | 71%
|
| Fillmore | England | 70%
|
| Harding | England | 70%
|
| Obama | Kenya | 70%
|
| Jefferson | England | 68%
|
| Madison | England | 68%
|
| McKinley | Ireland | 68%
|
| Biden | England | 66%
|
| Nixon | England | 63%
|
| Pierce | England | 62%
|
| Van Buren | Netherlands | 55%
|
| Grant | Scotland | 55%
|
| Buchanan | Scotland | 53%
|
| Taft | England | 51%
|
| Washington | England | 51%
|
| Roosevelt | Netherlands | 46%
|
| Hayes | Scotland | 46%
|
| Arthur | Wales | 46%
|
| Wilson | England | 45%
|
| Trump | Germany | 43%
|
| Tyler | England | 42%
|
| Hoover | Germany | 42%
|
| Reagan | Ireland | 39%
|
| Truman | England | 38%
|
| Monroe | Scotland | 38%
|
| Polk | Scotland | 37%
|
| Taylor | France | 20%
|