| Answer | Crossword Clue |
|---|---|
| CMIV | More than 1000 years ago. |
| MLIX | More than 900 years ago. |
| MLIV | More than 900 years ago. |
| MIV | More than 900 years ago. |
| MDCL | More than 300 years ago. |
| CCCC | More than 1500 years ago. |
| MLII | More than 900 years ago. |
| CMI | More than a thousand years ago. |
| MCV | A bit more than 900 years ago |
| ELOI | Wells created them more than 100 years ago |
| ATOMS | Units first posited more than 2500 years ago |
| WIE | 22-year-old Stanford graduate who became a pro golfer more than six years ago |
