Namewise

Cillian vs Leonardo

Cillian and Leonardocompared on official birth-registration statistics and Namewise's recorded data. This page states what each name's record shows — it never picks a winner or scores one name against the other.

Head to head

Ranks are only compared within one published list and one year. Two ranks from different years, from a boys' and a girls' list, or from different registrars are not comparable, so they are not placed side by side.

  • Northern Ireland · Boys

    In 2024, Cillian was ranked #2 and Leonardo #256 among boys in Northern Ireland.

  • Republic of Ireland · Boys

    In 2025, Cillian was ranked #9 and Leonardo #188 among boys in Republic of Ireland.

  • Scotland · Boys

    In 2024, Cillian was ranked #83 and Leonardo #234 among boys in Scotland.

  • England and Wales · Boys

    In 2025, Cillian was ranked #217 and Leonardo #126 among boys in England and Wales.

Cillian and Leonardo over time

Cillian and Leonardo appear together in 3 published lists, across 65 years of shared records. Cillian held the stronger position in more years in 2 of them, Leonardo in 1.

The order between them changed and held in one of those lists — a change in that published list, never a claim that one name displaced the other.

Leonardo reached its own highest recorded position earlier in 3 of those lists, and Cillian in none. Each position is a place inside its own list, so this compares when they peaked and never how high.

Counted list by list. Two names in the same published list are measured on the same scale in the same year, so those comparisons are real — but positions from different lists are not, so nothing here is combined into an overall standing.

How this pair is related

The relationship kinds these two qualify for, each under its own stated rule. Every one is drawn from a list they both appear in.

  • Longest-running competitions

    Cillian and Leonardo were both ranked in England and Wales · Boys for 30 years, from 1996 to 2025, ending at #217 and #126.

  • Peaked in the same years

    Both reached their highest recorded position in Republic of Ireland · Boys within 2 years — Cillian #4 in 2024, Leonardo #166 in 2023.

List by list

  • England and Wales · Boys30 shared years, 19962025

    Cillian held the stronger position in 1 of those years, Leonardo in 29.

    Highest recorded here: Cillian #177 in 2024, Leonardo #116 in 2019.

    The order changed in 1997: Leonardo moved ahead. In 1996 they stood at #1104 and #1458; by 1997 that had become #2337 and #759.

    Most recent shared year, 2025: Cillian #217, Leonardo #126.

  • Republic of Ireland · Boys24 shared years, 20022025

    Cillian held the stronger position in 24 of those years, Leonardo in 0.

    Highest recorded here: Cillian #4 in 2024, Leonardo #166 in 2023.

    The order between them never changed and held in this list.

    Most recent shared year, 2025: Cillian #9, Leonardo #188.

  • Northern Ireland · Boys11 shared years, 20132024

    Cillian held the stronger position in 11 of those years, Leonardo in 0.

    Highest recorded here: Cillian #2 in 2024, Leonardo #249 in 2021.

    The order between them never changed and held in this list.

    Most recent shared year, 2024: Cillian #2, Leonardo #256.

Two names moving past each other in a ranking is a fact about the ranking. Namewise does not claim one name displaced the other, that families chose between them, or that either influenced the other — none of that is in this data.

Where to go next

Comparisons that share a name, a rule or a published list with this one. Each is an existing comparison page with its own evidence — nothing here says these pairs are alike.

Other comparisons involving Cillian

Pairs where Cillian shares a published list with another name, each measured inside one registrar's own list.

Side by side

Side-by-side comparison of Cillian, Leonardo
FieldCillianLeonardo
Record typeEditorially researched profileOfficial statistical record (evidence-only)
Gender usagemalemale
MeaningProbably from Old Irish 'cell' (church) combined with a diminutive suffix.Not yet recorded
OriginIrishNot yet recorded
PronunciationNot yet recorded
Syllables23
Common variants / nicknamesNot yet recordedNot yet recorded
Recorded regional usageGB-ENW, GB-NIR, GB-SCT, IEAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO
Most recent popularity observationRepublic of Ireland · Boys #9 (2025)New South Wales, Australia · Boys #79 (2025)
Pronunciation clarity (demonstration score)Not yet recordedNot yet recorded
Spelling simplicity (demonstration score)82/10076/100
International familiarity (demonstration score)100/100100/100
Data Confidencemediummedium

What the data shows

  • Cillian has a recorded origin (Irish); Leonardo does not have one recorded yet.
  • Cillian has 2 syllables, compared with 3 for Leonardo.
  • A meaning is recorded for Cillian; Leonardo doesn't have one written yet.
  • Both names have recorded usage in GB-ENW, GB-NIR, GB-SCT, IE.

How each name got here

Cillian

Popularity journey

  1. First recorded1970

    First recorded at #305 among boys in Republic of Ireland in 1970 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Republic of Ireland · Boys

  2. Highest recorded1997–2024

    Highest recorded position: #2 among boys in Northern Ireland, in 2024 (recorded 1997–2024).

    Northern Ireland · Boys

  3. Most recent2025

    Most recently recorded at #217 among boys in England and Wales, in 2025.

    England and Wales · Boys

Leonardo

Popularity journey

  1. First recorded1966

    First recorded at #463 among boys in Norway in 1966 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Norway · Boys

  2. Highest recorded2018–2025

    Highest recorded position: #66 among boys in New South Wales, Australia, in 2022 (recorded 2018–2025).

    New South Wales, Australia · Boys

  3. Most recent2025

    Most recently recorded at #126 among boys in England and Wales, in 2025.

    England and Wales · Boys