SlideShare a Scribd company logo
5-11-2019
Rick Mourits
LINKS-Netherlands
Rec0nstructing the Dutch population between 1812 and 1867
using the Dutch civil registry
Outline
1. What is LINKS?
2. The pipeline
• Civil registry
• Linking the certificates
• Family reconstitutions
3. Plans for the future
General idea
Vital events that occurred after 1811:
• have been registered
• are (or will be) indexed and digitized
• can be linked with LINKS
• which is necessary to reconstitute families
In time, this makes it possible to retrace every individual
who experienced a vital event in the Netherlands.
1. What is LINKS?
Family reconstitution using birth, marriage, and death
certificates from the Dutch civil registry
LINKing System for family reconstitution
Contains information on:
• parents, offspring, and spouses,
• age at marriage, childbirth, and death,
• number of marriages, children, etc.
• birth intervals,
• migration
• occupations
2. Pipeline
Feedback on the pipeline
Civil registry
Starts in 1796/1811/1812
Third oldest in the world after France (1796) and Belgium (1796/1811)
Contains vital events
• Birth certificates 1811-1918 100-year delay
• Marriage certificates 1811-1943 075-year delay
• Death certificates 1811-1968 050-year delay
Registered at the municipal level
• Made in duplicate
• No loose forms
• Pages watermarked by local judiciary
Civil registry
Extract from the civil registry
Linking the certificates
Birth, marriage and death certificates
• Parents
• Offspring
Name constraints:
• Exact matching
• Levenshtein
Time constraints:
• Age at death
• Age at marriage
• Age at birth of a child
Figure 1: Families in Comparison
Merging linked certificates into linked families
Pedigree data
Information:
• Vital events (duh)
• Municipality of registration
• Family relations
• Age
• Occupations (not always indexed)
Available certificates:
• Birth certificates 14,215,411
• Marriage certificates 04,642,000
• Death certificates 13,212,269
F1
F2
F3
First marriage Second marriage
Unique selling points
Families!!!
• Clustering
• Networks / capital
• Intergenerational transfers
Size:
• 2+ generations
• Complete record of families
• Ample half-sibs, second cousins, etc.
• Large database
• Sizable area
F1
F2
F3
First marriage Second marriage
3. Plans upcoming years
Documentation LINKS-Zeeland LINKS-NL Other
First users First version ready Limburg (Q3) Place names
Data quality check Bug fixing Groningen (Q4) Pre-marital children
Description database Linking Rest Replacement births
Twins
Q4 2019 Q2 2020 Q4 2021 Q1 2020
Overview of available data
birth, marriage & death death
marriage & death
cohorts
© Utrecht University
The information in this presentation has been compiled with the utmost care,
but no rights can be derived from its contents.
DISCLAIMER

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Taiwan Life at the Extremese 2.0: Introduction to LINKS

  • 1. 5-11-2019 Rick Mourits LINKS-Netherlands Rec0nstructing the Dutch population between 1812 and 1867 using the Dutch civil registry
  • 2. Outline 1. What is LINKS? 2. The pipeline • Civil registry • Linking the certificates • Family reconstitutions 3. Plans for the future
  • 3. General idea Vital events that occurred after 1811: • have been registered • are (or will be) indexed and digitized • can be linked with LINKS • which is necessary to reconstitute families In time, this makes it possible to retrace every individual who experienced a vital event in the Netherlands.
  • 4. 1. What is LINKS? Family reconstitution using birth, marriage, and death certificates from the Dutch civil registry LINKing System for family reconstitution Contains information on: • parents, offspring, and spouses, • age at marriage, childbirth, and death, • number of marriages, children, etc. • birth intervals, • migration • occupations
  • 6. Feedback on the pipeline
  • 7. Civil registry Starts in 1796/1811/1812 Third oldest in the world after France (1796) and Belgium (1796/1811) Contains vital events • Birth certificates 1811-1918 100-year delay • Marriage certificates 1811-1943 075-year delay • Death certificates 1811-1968 050-year delay Registered at the municipal level • Made in duplicate • No loose forms • Pages watermarked by local judiciary Civil registry
  • 8. Extract from the civil registry
  • 9. Linking the certificates Birth, marriage and death certificates • Parents • Offspring Name constraints: • Exact matching • Levenshtein Time constraints: • Age at death • Age at marriage • Age at birth of a child Figure 1: Families in Comparison
  • 10. Merging linked certificates into linked families
  • 11. Pedigree data Information: • Vital events (duh) • Municipality of registration • Family relations • Age • Occupations (not always indexed) Available certificates: • Birth certificates 14,215,411 • Marriage certificates 04,642,000 • Death certificates 13,212,269 F1 F2 F3 First marriage Second marriage
  • 12. Unique selling points Families!!! • Clustering • Networks / capital • Intergenerational transfers Size: • 2+ generations • Complete record of families • Ample half-sibs, second cousins, etc. • Large database • Sizable area F1 F2 F3 First marriage Second marriage
  • 13. 3. Plans upcoming years Documentation LINKS-Zeeland LINKS-NL Other First users First version ready Limburg (Q3) Place names Data quality check Bug fixing Groningen (Q4) Pre-marital children Description database Linking Rest Replacement births Twins Q4 2019 Q2 2020 Q4 2021 Q1 2020
  • 14. Overview of available data birth, marriage & death death marriage & death cohorts
  • 15. © Utrecht University The information in this presentation has been compiled with the utmost care, but no rights can be derived from its contents. DISCLAIMER