Ieuan
given name · Latin script
Recorded as a male name· opposite-gender records fall within measured source noise
Ieuan is a given name written in the Latin script, most frequently recorded in the United Kingdom. Recorded meaning: From the Welsh personal name Ieuan ‘John’; earliest citation late 13th c.
- GBUnited Kingdom
- AUAustralia
- NZNew Zealand
Where the name is found, darker where our sources hold more of it. No national register counts its bearers anywhere we hold data, so the map carries no figures. One hue, darker where it is more common; hover a country for its figure.
Meaning & origin(measured from records)
From the Welsh personal name Ieuan ‘John’; earliest citation late 13th c. jevin.
Sources 1
- Welsh Surnames
Attested across 19 languages in the etymology graph.
Where in the world(measured from records)
Recorded in:
No national register we accept counts this name’s bearers, so the page lists where it is found and publishes no figure.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Other recorded senses(measured from records)
Ieuan is also recorded in 5 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In Welsh, from Welsh Ieuan (< John); earliest cited 1292 (SR 1292, John Bras, John Bongam, John Tandy, John Baner, John Beg)
as a nameWelsh Surnames
In Welsh, From Welsh personal name Ieuan (< John); surname forms are attested by Jenn ap Dd ap Gwilym Gethyn, 1383–4.
as a nameWelsh Surnames
In Welsh, From Welsh personal name Ieuan < John; earliest cited form in this entry is Sannan 1668 (Gwen Sion).
as a nameWelsh Surnames
In Welsh, from Welsh personal name Ieuan < John/Johannes; earliest citation: SR 1292, Juan ap Lewelyn.
as a nameWelsh Surnames
In Welsh, Welsh personal name root; earliest cited surname form: Gwyn ap Yanto (Caern 1293).
as a nameWelsh Surnames
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Notable people with this name(measured from records)
- John Trevorb. 1350not in their usual nameWelsh bishop (died 1410)
- Ieuan ab Owain Glyndŵrb. 1380illegitimate son of Welsh prince
- Ieuan Rees-Daviesb. 1894GBWelsh musician and author (1894-1967)
- Ieuan Williamsb. 1909Welsh cricketer (1909-1964)
- Ieuan Gwynedd Jonesb. 1920GBWelsh historian (1920-2018)
- Wyn Robertsb. 1930GBnot in their usual nameBritish politician (1930-2013)
- Ieuan Wyn Jonesb. 1949GBWelsh politician, leader of Plaid Cymru; MP 1987-2001; Assembly Member 1999-2013 (born 1949)
- Ieuan Rhysb. 1961GBBritish actor
- Ieuan Evansb. 1964GBWelsh rugby union player
- Ieuan Lloydb. 1993GBBritish swimmer
The ten people covered by the most Wikipedia language editions — a proxy for cross-cultural notability, which favours historical and Western figures over equally prominent contemporary ones — shown by birth year. Source: Wikidata (CC0).
Evidence(measured from records)
Attested in 17 sources across 8 countries.
Reference works 2
- Wikipedia given-name tokens
- Wikidata name items (native-script + romanized given/family names)
These works list the name; their figures are licensed and are not reproduced here.
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- Where does the name Ieuan come from?
- From the Welsh personal name Ieuan ‘John’; earliest citation late 13th c. jevin. Recorded by Welsh Surnames.
- What does the name Ieuan mean?
- Recorded meaning: From the Welsh personal name Ieuan ‘John’; earliest citation late 13th c.
- Is Ieuan a male or female name?
- Ieuan is a male name in our records. Opposite-gender entries fall within the cross-gender noise we measure in the source data, so we don't report them as usage.
- What are other forms of the name Ieuan?
- In the etymology graph, John, Juan and Ivan are forms of the same name in other languages; Ianto is a recorded short or pet form.
- In which country does Ieuan have the most bearers?
- Ieuan is most frequently recorded in the United Kingdom.
What do you want to know about Ieuan?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/ieuanThe same payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), and bulk access is licensed separately.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Ieuan”. Data snapshot 2026-10-10.