| Year of creation | Full title | % Correct |
|---|---|---|
| 1986 | Duke of York | 93%
|
| 2011 | Duke of Cambridge | 88%
|
| 1947 | Duke of Edinburgh | 81%
|
| 1337 | Duke of Cornwall | 78%
|
| 1934 | Duke of Kent | 77%
|
| 1438 | Duke of Norfolk | 69%
|
| 1928 | Duke of Gloucester | 68%
|
| 1694 | Duke of Devonshire | 48%
|
| 1766 | Duke of Northumberland | 47%
|
| 1814 | Duke of Wellington | 47%
|
| 1874 | Duke of Westminster | 47%
|
| 1702 | Duke of Marlborough | 43%
|
| 1547 | Duke of Somerset | 42%
|
| 1701 | Duke of Argyll | 39%
|
| 1719 | Duke of Manchester | 39%
|
| 1398 | Duke of Rothesay | 33%
|
| 1900 | Duke of Fife | 31%
|
| 1657 | Duke of Richmond, Lennox and Gordon | 31%
|
| 1694 | Duke of Bedford | 30%
|
| 1703 | Duke of Rutland | 28%
|
| 1684 | Duke of St. Albans | 26%
|
| 1766 | Duke of Leinster | 25%
|
| 1833 | Duke of Sutherland | 25%
|
| 1663 | Duke of Buccleuch and Queensbury | 24%
|
| 1643 | Duke of Hamilton and Brandon | 23%
|
| 1703 | Duke of Atholl | 21%
|
| 1675 | Duke of Grafton | 21%
|
| 1868 | Duke of Abercorn | 20%
|
| 1682 | Duke of Beaufort | 20%
|
| 1707 | Duke of Montrose | 17%
|
| 1707 | Duke of Roxburghe | 15%
|