Namewise

Katherine vs Siobhán

Katherine and Siobháncompared 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 · Girls

    In 2010, Katherine was ranked #194 and Siobhán #430 among girls in Northern Ireland.

  • England and Wales · Girls

    In 2024, Katherine was ranked #594 and Siobhán #3015 among girls in England and Wales.

  • Republic of Ireland · Girls

    In 2025, Katherine was ranked #608 and Siobhán #885 among girls in Republic of Ireland.

Katherine and Siobhán over time

Katherine and Siobhán appear together in 3 published lists, across 98 years of shared records. Katherine held the stronger position in more years in 2 of them, Siobhán 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.

Each reached its own highest recorded position first in 1 of the lists they share.

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

    Katherine and Siobhán were both ranked in Republic of Ireland · Girls for 57 years, from 1964 to 2025, ending at #608 and #885.

  • Peaked in the same years

    Both reached their highest recorded position in England and Wales · Girls within 2 years — Katherine #48 in 1996, Siobhán #138 in 1996.

List by list

  • Republic of Ireland · Girls57 shared years, 1964–2025

    Katherine held the stronger position in 3 of those years, Siobhán in 54.

    Highest recorded here: Katherine #71 in 1965, Siobhán #15 in 1971.

    The order changed in 2025: Katherine moved ahead. In 2024 they stood at #747 and #634; by 2025 that had become #608 and #885.

    Most recent shared year, 2025: Katherine #608, Siobhán #885.

  • England and Wales · Girls29 shared years, 1996–2024

    Katherine held the stronger position in 29 of those years, Siobhán in 0.

    Highest recorded here: Katherine #48 in 1996, Siobhán #138 in 1996.

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

    Most recent shared year, 2024: Katherine #594, Siobhán #3015.

  • Northern Ireland · Girls12 shared years, 1997–2010

    Katherine held the stronger position in 12 of those years, Siobhán in 0.

    Highest recorded here: Katherine #56 in 1998, Siobhán #133 in 1997.

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

    Most recent shared year, 2010: Katherine #194, Siobhán #430.

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 Katherine

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

Other comparisons involving Siobhán

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

Side by side

Side-by-side comparison of Katherine, Siobhán
FieldKatherineSiobhán
Record typeOfficial statistical record (evidence-only)Editorially researched profile
Gender usagefemalefemale
MeaningNot yet recordedShares the meaning of Joan/Jehanne: commonly interpreted as 'God is gracious'.
OriginNot yet recordedIrish
PronunciationNot yet recorded/ʃɪˈvɔːn/
Syllables41
Common variants / nicknamesNot yet recordedChevonne, Shivaun
Recorded regional usageAU-NSW, GB-ENW, GB-NIR, GB-SCT, IE, NO, NZGB-ENW, GB-NIR, IE
Most recent popularity observationRepublic of Ireland · Girls #608 (2025)Republic of Ireland #90 (2025)
Pronunciation clarity (demonstration score)Not yet recorded90/100
Spelling simplicity (demonstration score)70/10082/100
International familiarity (demonstration score)100/100100/100
Data Confidencemediumhigh

What the data shows

  • Siobhán has a recorded origin (Irish); Katherine does not have one recorded yet.
  • Katherine has 4 syllables, compared with 1 for Siobhán.
  • A meaning is recorded for Siobhán; Katherine doesn't have one written yet.
  • Both names have recorded usage in GB-ENW, GB-NIR, IE.
  • The available evidence gives Katherine a "medium" Data Confidence level and Siobhán a "high" level — this reflects how complete and corroborated the underlying evidence is, not a judgement of either name.

How each name got here

Katherine

Popularity journey

  1. First recorded1955

    First recorded at #100 among girls in New Zealand in 1955 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    New Zealand · Girls

  2. Highest recorded1956–2000

    Highest recorded position: #24 among girls in New South Wales, Australia, in 1982 (recorded 1956–2000).

    New South Wales, Australia · Girls

  3. Most recent2025

    Most recently recorded at #608 among girls in Republic of Ireland, in 2025.

    Republic of Ireland · Girls

Siobhán

Popularity journey

  1. First recorded1964

    First recorded at #35 among girls in Republic of Ireland in 1964 — the earliest year that source publishes this name, not necessarily the earliest it was used.

    Republic of Ireland · Girls

  2. Highest recorded1964–2025

    Highest recorded position: #15 among girls in Republic of Ireland, in 1971 (recorded 1964–2025).

    Republic of Ireland · Girls

  3. Most recent2025

    Most recently recorded at #90 in Republic of Ireland, in 2025.

    Republic of Ireland