Last updated: 22 April 2026
Data Sources & Attribution
NomiaWeave uses public datasets to tell you which given names are attested, legal, or popular in each country, and which languages they belong to. This page lists every external source we currently ingest, what it covers, and the license under which we use it. Derived data in the app combines these sources with our own normalization, ranking, and cataloguing work.
If you spot an inaccuracy, a stale link, or a source that should be credited differently, email us at support@nomiaweave.com.
Country popularity, legality, and attestation
These datasets power country badges on name suggestions, popularity rankings, and period-of-data labels.
Social Security Administration — National Names Data
United StatesAnnual counts of given names assigned to newborns (1880–present).
License: Public domain (U.S. federal government work, 17 U.S.C. §105).
Office for National Statistics — Baby names statistics
England and WalesAnnual ranked baby name counts by sex for England and Wales.
License: Open Government Licence v3.0 (Crown copyright).
https://www.ons.gov.uk/peoplepopulationandcommunity/birthsdeathsandmarriages/livebirths
National Records of Scotland — Babies’ First Names
ScotlandFull list of recorded first names and frequencies per year, from 1974.
License: Open Government Licence v3.0 (Crown copyright).
Northern Ireland Statistics and Research Agency — Baby Names
Northern IrelandFull list of registered first names with annual frequencies.
License: Open Government Licence v3.0 (Crown copyright).
https://www.nisra.gov.uk/statistics/births-deaths-and-marriages/baby-names
dane.gov.pl — Imiona nadawane dzieciom w Polsce
PolandMost popular first names given to newborns, published by the Polish Ministry of Digital Affairs.
License: Creative Commons CC0 1.0 Universal.
Insee — Fichier des prénoms
FranceNational French baby-name counts by sex and year from 1900 onward. NomiaWeave currently uses the national CSV with yearly counts; INSEE notes that counts are rounded to the nearest 5 and data before 2012 excludes Mayotte.
License: Licence Ouverte / Open License.
Sociale Verzekeringsbank — Kindernamen
NetherlandsAnnual Dutch baby-name counts and ranks from SVB publications. Current NomiaWeave coverage is 1996–2012 and 2016–2025; 1996–2012 is aggregated from monthly source rows and 2013–2015 is unavailable.
License: No explicit open-data license was found on the SVB kindernamen pages. SVB’s website notice says parts of website text may be reproduced if the source is quoted; we provide attribution here and use the dataset for factual name counts and rankings.
Instituto dos Registos e do Notariado — Lista de nomes próprios
PortugalOfficial list of given names admitted for registration in Portugal.
License: Published by the Portuguese Institute of Registries and Notaries for public reference. Used here for factual identification of admitted names.
Name-to-language associations
These sources inform the language tags shown on names and the language filter.
Wikidata
GlobalUsed for name-to-language associations. We extract targeted subsets via SPARQL for languages we support and preserve provenance on each association.
License: Creative Commons CC0 1.0 Universal.
Wiktionary
GlobalEvaluated as a secondary source for language associations where Wikidata coverage is thin. Kept segregated with its own provenance so it can be removed independently if needed.
License: Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0).
Usage notes
- We do not claim copyright over the underlying facts. Where a dataset requires attribution, we credit the source above and preserve that attribution on derived data.
- Crown copyright material is reused under the Open Government Licence v3.0.
- Sources with differing licensing terms (e.g. Wikidata CC0 vs Wiktionary CC BY-SA) are stored separately in our catalog so they can be disentangled if a source is retired or relicensed.
- Rankings, aggregate percentiles, and the suggestion index itself are produced by NomiaWeave and are not part of any source dataset.