This dataset is included in the NDE Dataset Register
What data are there in this dataset?
The open data consists of the metadata of 10,655,981 historical documents from AlleFriezen, containing 20,333,845 historical personal references. The pie chart shows the number of person entries per source type.
How can the dataset be downloaded?
Harvesting (A2A/XML)
The AlleFriezen historical document metadata dataset is provided as an OAI-PMH metadata feed. This feed is an implementation of an OAI-PMH data provider, based on OAI-PMH 2.0. The metadata is structured according to the Archives 2 All (A2A) model.
The URLs to harvests this dataset (set = frl):
Download (A2A/XML)
The dataset can be downloaded in A2A / XML format as a compressed file (.tar.gz):
- DownloadThis file with 10,655,981 records is created on August 23, 2026, the file size is 32 GB (uncompressed) / 3 GB (compressed).
Download (linked data in 'a2a vocabulaire')
The dataset can be downloaded in N-triples format as a compressed file (.ttl.gz.):
- DownloadThis file was created on August 24, 2026 and has a file size of 7 GB (compressed).
Download (CSV)
The dataset can be downloaded in parts in CSV format as a compressed file (.csv.gz):
- DownloadFile with data of source type Population registers. This file with 3,822,764 lines was created on August 24, 2026, the file size is 2 GB (uncompressed) / 283 MB (compressed).
- DownloadFile with data of source type Births. This file with 976,423 lines was created on August 24, 2026, the file size is 617 MB (uncompressed) / 97 MB (compressed).
- DownloadFile with data of source type Marriages. This file with 348,194 lines was created on August 24, 2026, the file size is 297 MB (uncompressed) / 51 MB (compressed).
- DownloadFile with data of source type Deaths. This file with 902,753 lines was created on August 24, 2026, the file size is 661 MB (uncompressed) / 106 MB (compressed).
- DownloadFile with data of source type Funerals . This file with 206,678 lines was created on August 24, 2026, the file size is 158 MB (uncompressed) / 18 MB (compressed).
- DownloadFile with data of source type Baptisms. This file with 639,318 lines was created on August 24, 2026, the file size is 481 MB (uncompressed) / 58 MB (compressed).
- DownloadFile with data of source type Marriages (church). This file with 374,369 lines was created on August 24, 2026, the file size is 309 MB (uncompressed) / 35 MB (compressed).
- DownloadFile with data of source type Notarial archives. This file with 1,278,640 lines was created on August 24, 2026, the file size is 2 GB (uncompressed) / 191 MB (compressed).
License
This dataset is offered by Open Archives under a Creative Commons 0 license (Public Domain Dedication). This means that you can copy, modify, distribute and execute the work, even for commercial purposes, without asking permission. It is appreciated if you contact Open Archives if you use this dataset, maybe we can do even more for each other!
The dataset can contain URLs to images and images of third-party viewers, the CC0-license does not apply to those items! Check the website of the relevant archive which license is linked to that material.
For questions and comments about this dataset, please contact Open Archives.
Datasetbeschrijving in JSON-LD
<![CDATA[
{
"@context": "https://schema.org/",
"@type": "Dataset",
"@id": "https://www.openarchieven.nl/id/dataset_frl",
"identifier": "https://www.openarchieven.nl/id/dataset_frl",
"name": [
{
"@value": "Dataset genealogische metadata AlleFriezen via Open Archieven",
"@language": "nl"
},
{
"@value": "Dataset genealogical metadata AlleFriezen via Open Archives",
"@language": "en"
}
],
"mainEntityOfPage": "https://www.openarchieven.nl/datasets/frl",
"thumbnailUrl": "https://www.openarchieven.nl/img/search/frl-oa-en.png",
"inLanguage": "nl",
"distribution": [
{
"@type": "DataDownload",
"@id": "https://www.openarchieven.nl/.well-known/genid/distribution-frl-oai-pmh",
"contentUrl": "https://api.openarchieven.nl/oai-pmh/?verb=ListRecords&metadataPrefix=oai_a2a&set=frl",
"encodingFormat": "application/xml",
"genre": "OAI-PMH-endpoint",
"description": [
{
"@value": "OAI-PMH endpoint met XML gebaseerd op het A2A model",
"@language": "nl"
},
{
"@value": "OAI-PMH endpoint with XML based on the A2A model",
"@language": "en"
}
]
},
{
"@type": "DataDownload",
"@id": "https://www.openarchieven.nl/.well-known/genid/distribution-frl-nt",
"contentUrl": "https://oa-export.s3.nl-ams.scw.cloud/nt/frl.nt.gz",
"description": [
{
"@value": "Gecomprimeerd N-triples bestand",
"@language": "nl"
},
{
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"@language": "en"
}
],
"contentSize": 6608044526,
"inLanguage": "nl",
"dateModified": "2026-08-24",
"license": "https://creativecommons.org/publicdomain/zero/1.0/",
"encodingFormat": "application/n-triples+gzip"
},
{
"@type": "DataDownload",
"@id": "https://www.openarchieven.nl/.well-known/genid/distribution-frl-xml",
"contentUrl": "https://oa-export.s3.nl-ams.scw.cloud/xml/frl.xml.gz",
"description": [
{
"@value": "Gecomprimeerd XML bestand gebaseerd op het A2A model",
"@language": "nl"
},
{
"@value": "Compressed XML file based on the A2A model",
"@language": "en"
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],
"genre": "Datadump",
"contentSize": 3326898197,
"inLanguage": "nl",
"dateModified": "2026-08-23",
"license": "https://creativecommons.org/publicdomain/zero/1.0/",
"encodingFormat": "application/xml+gzip"
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],
"about": [
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/554"
},
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/551"
},
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/552"
},
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/553"
},
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/526"
},
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/548"
},
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/549"
},
{
"@id": "https://terms.personsincontext.org/ThesaurusHistorischePersoonsgegevens/572"
}
],
"isBasedOn": [
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"https://webservices.memorix.nl/a2a/b3d793d4-f737-11e5-903e-60f81db16928"
],
"keywords": [
{
"@value": "Historische persoonsvermeldingen",
"@language": "nl"
},
{
"@value": "Genealogie",
"@language": "nl"
},
{
"@value": "Bevolkingsregisters",
"@language": "nl"
},
{
"@value": "Geboorten",
"@language": "nl"
},
{
"@value": "Huwelijken",
"@language": "nl"
},
{
"@value": "Overlijdens",
"@language": "nl"
},
{
"@value": "DTB Begraven",
"@language": "nl"
},
{
"@value": "DTB Dopen",
"@language": "nl"
},
{
"@value": "DTB Trouwen",
"@language": "nl"
},
{
"@value": "Notari\u00eble archieven",
"@language": "nl"
},
{
"@value": "Historical personal data",
"@language": "en"
},
{
"@value": "Genealogy",
"@language": "en"
},
{
"@value": "Population registers",
"@language": "en"
},
{
"@value": "Births",
"@language": "en"
},
{
"@value": "Marriages",
"@language": "en"
},
{
"@value": "Deaths",
"@language": "en"
},
{
"@value": "Funerals",
"@language": "en"
},
{
"@value": "Baptisms",
"@language": "en"
},
{
"@value": "Marriages (church)",
"@language": "en"
},
{
"@value": "Notarial archives",
"@language": "en"
}
],
"description": [
{
"@value": "De open data bestaat uit de metadata van 10.655.981 akten van AlleFriezen, met daarop 20.333.845 historische persoonsvermeldingen. De brontypes omvatten bevolkingsregisters, geboorten, huwelijken, overlijdens, dtb begraven, dtb dopen, dtb trouwen, notari\u00eble archieven. Deze dataset kan doorzocht worden via https://www.openarchieven.nl/frl",
"@language": "nl"
},
{
"@value": "The open data consists of metadata from 10,655,981 records of AlleFriezen, with 20,333,845 historical person observations. The source types included population registers, births, marriages, deaths, funerals, baptisms, marriages (church), notarial archives. This dataset can be searched via https://www.openarchieven.nl/frl",
"@language": "en"
}
],
"license": "https://creativecommons.org/publicdomain/zero/1.0/",
"publisher": {
"@id": "https://www.openarchieven.nl/",
"@type": "Organization",
"name": [
{
"@language": "nl",
"@value": "Open Archieven"
},
{
"@language": "en",
"@value": "Open Archives"
}
],
"logo": "https://www.openarchieven.nl/assets/img/oa/logo200x200-nl.png",
"identifier": "NL-GdOA",
"contactPoint": {
"@id": "https://www.openarchieven.nl/contact",
"@type": "ContactPoint",
"name": [
{
"@value": "Databeheerder Open Archieven",
"@language": "nl"
},
{
"@value": "Datamanager Open Archives",
"@language": "en"
}
],
"email": "genealogie@coret.org"
}
},
"creator": {
"@id": "https://www.allefriezen.nl/",
"@type": "Organization",
"name": [
{
"@value": "AlleFriezen",
"@language": "nl"
}
],
"contactPoint": {
"name": [
{
"@value": "Dienstverlening AlleFriezen",
"@language": "nl"
},
{
"@value": "Services AlleFriezen",
"@language": "en"
}
],
"telephone": "+31 58 7890789",
"email": "info@allefriezen.nl"
},
"address": {
"@type": "PostalAddress",
"addressLocality": "Leeuwarden",
"postalCode": "8911 DH",
"streetAddress": "Boterhoek 1-3",
"addressCountry": "Nederland"
}
},
"spatialCoverage": [
{
"@id": "https://sws.geonames.org/2750405/"
},
{
"@id": "https://sws.geonames.org/2755812/"
}
],
"temporalCoverage": "1527/1976",
"includedInDataCatalog": {
"@id": "https://www.openarchieven.nl/id/datacatalog"
},
"dateCreated": "2024-01-17",
"dateModified": "2026-04-18",
"datePublished": "2024-01-17"
}]]>