Names › Boy › I › Iestyn
Boy name · Welsh origin

Iestyn

Welsh origin · 100% boys · 10 born in 2025

Welsh form of Justin, from Latin iustus, "just" — just; fair. Iestyn ap Gwrgant was the last ruler of Glamorgan before the Norman conquest of Wales.

MeaningJust; fair
OriginWelsh
Syllables2
NicknamesIes
Recorded in England & Wales1,542
Born in 202510
Themes: justice

Popularity, 1880–2025

Babies named Iestyn per year · SSA, ONS, NRS, CSO, INSEE and SSB
18802025
England & WalesScotlandeach scaled to its own peak
  • Peak year2004 · 138
  • Born in 202510
  • All time1,542
  • England & Wales, 202510

How popular is Iestyn?

Iestyn was given to 10 babies in England and Wales in 2025. Its best year was 2004, with 138 registrations. The name is absent from American records, so there is no US curve to compare it against.

Names that sound like Iestyn

Phonetic similarity, 0–1
  1. Austyn0.60
  2. Tristyn0.60
  3. Justyn0.60
  4. Devyn0.55
  5. Sevyn0.55
  6. Merlyn0.55
  7. Melvyn0.55
  8. Ashtyn0.47

Middle names for Iestyn

Ranked by flow score
  1. Iestyn Paul0.77
  2. Iestyn John0.77
  3. Iestyn Blake0.76
  4. Iestyn Wade0.76
  5. Iestyn Ross0.76
  6. Iestyn Quinn0.76

Sibling names for Iestyn

Names registered alongside it, on a 30-year window
  1. Hafsahsister · 0.93
  2. Adnanbrother · 0.92
  3. Jadenbrother · 0.92
  4. Amanieither · 0.92
  5. Lilisister · 0.92
  6. Deborahsister · 0.92

In the British record

England and Wales, 1996–2025
  1. First recorded1996
  2. Peak year2004 · 138
  3. Years recorded30 of 30
  4. All time1,542

With a common surname

Flow score against the most-used American surnames · try your own
  1. Iestyn Anderson0.77
  2. Iestyn White0.72
  3. Iestyn Moore0.72
  4. Iestyn Hill0.72
  5. Iestyn Hall0.72
  6. Iestyn Brown0.72

How to read these numbers

Every score on this page is explained
  1. Phonetic similarity0–1
  2. Middle-name flow0–1
  3. Sibling fit0–1
  4. Living population estimatemethod
  5. PronunciationCMU dictionary

Sources for Iestyn

Every figure on this page is public record
  1. England & Wales1996–2025
  2. Scotland1974–2020

Source: Office for National Statistics, baby names for England and Wales. Contains public sector information licensed under the Open Government Licence v3.0. Scores on this page are explained in the methodology.