| 100% | ARTHUR | 6 | The second of Prince William's four names |
| 84% | CHARLES | 7 | The second of Prince Harry's four names |
| 52% | KATE | 4 | Prince William's wife, the Duchess of Cambridge |
| 50% | KATE | 4 | First name of Prince William's wife |
| 48% | HAMLET | 6 | 1996 film adaptation of William Shakespeare's play of the same name about a Danish prince and his journey of vengeance, starring Kate Winslet |
| 46% | DADE | 4 | Second half of the U.S.'s only hyphenated county name |
| 46% | OHENRY | 6 | Pen name of William Sidney Porter, author of short story collections Roads of Destiny and The Four Million |
| 46% | PRINCESS | 8 | Prince William is the son of __ Diana |
| 46% | ARAL | 4 | Name of what was once the world's second-largest saltwater lake |
| 46% | CITY | 4 | Word in the names of four U.S. state capitals |
| 45% | ADELAIDE | 8 | Aussie city with the name of William IV's consort |
| 45% | WAN | 3 | The second name of Kenobi, from "Star Wars" |
| 45% | CITY | 4 | Last word in the names of four U.S. state capitals |
| 45% | EMMA | 4 | Second-most popular girl's name of the 2020s, after Olivia |
| 43% | KATE | 4 | ___ Middleton, nickname of Prince William's wife |
| 43% | WHAT | 4 | The second of the five W's |
| 43% | SAN | 3 | Beginning of the names of California’s second, third, and fourth most populous cities |
| 43% | ETON | 4 | School where Prince William was captain of the swimming team |
| 43% | GREGORY | 7 | After John, the second most common name of a pope |
| 43% | RASSELAS | 8 | Name by which Samuel Johnson's 1759 novel The Prince of Abissinia: A Tale is also known |
| 42% | SOX | 3 | Second word in the names of two MLB teams |
| 42% | MIDDLETON | 9 | Prince William's wife's maiden name |
| 42% | STUPID | 6 | The second “S” of KISS |
| 42% | TOMCANTY | 8 | Name of the pauper in The Prince and the Pauper |
| 41% | CITY | 4 | Part of the names of four state capitals |
| 41% | ETON | 4 | Prince William's boarding school (anagram of "note") |
| 41% | NEW | 3 | First word in the names of four states |
| 41% | CITY | 4 | Word in the names of four state capitals |
| 41% | WILLEMSTAD | 10 | Curaçao capital named for the Prince of Orange |
| 41% | PERICLES | 8 | William Shakespeare play subtitled Prince of Tyre featuring the character Thaisa |