Compare Names
Search for up to 4 names to compare side by side, or browse a curated comparison below.
- Cillian
- Harry
| Field | Cillian | Harry |
|---|---|---|
| Record type | Editorially researched profile | Editorially researched profile |
| Gender usage | male | male |
| Meaning | Probably from Old Irish 'cell' (church) combined with a diminutive suffix. | A diminutive/pet form, inheriting its meaning from Henry — 'home ruler' — and functioning, in modern times, as a nickname for both Henry and names beginning with 'Har-'. During the Middle Ages in England, Henry was generally rendered as Harry or Herry in English pronunciation. |
| Origin | Irish | English, medieval form/diminutive of Henry |
| Pronunciation | Not yet recorded | /ˈhæri/ |
| Syllables | 2 | 2 |
| Common variants / nicknames | Not yet recorded | Not yet recorded |
| Recorded regional usage | GB-ENW, GB-NIR, GB-SCT, IE | AU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZ |
| Most recent popularity observation | Republic of Ireland · Boys #9 (2025) | England and Wales · Boys #19 (2025) |
| Pronunciation clarity (demonstration score) | Not yet recorded | 90/100 |
| Spelling simplicity (demonstration score) | 82/100 | 94/100 |
| International familiarity (demonstration score) | 100/100 | 100/100 |
| Data Confidence | medium | medium |
What the data shows
- Cillian is recorded with a Irish origin, while Harry is recorded with a English, medieval form/diminutive of Henry origin.
- Cillian and Harry both have 2 syllables.
- Cillian's recorded meaning differs from Harry's — see the table above for each.
- Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.
Name rivalries — pairs whose positions genuinely passed each other →
Curated comparisons
Two of the UK's most enduringly popular girls' names, both with a soft, flowing sound and a similar era of peak popularity — the choice usually comes down to origin story and nickname preference.
Both are currently the most-used boys' names in several English-speaking countries. Oliver leans slightly more classic/literary; Noah is shorter and more globally portable.
Both short, currently-fashionable UK names — Freya carries Norse mythological weight, while Isla is a Scottish place name that reads as slightly softer and more understated.
Both carry regal, 'strength'-adjacent meanings and centuries of royal usage — Alexander is the more internationally familiar choice, Magnus the more distinctive.