← Back to catalogue
Research draft

cousin

vr.tr.cousin · PHY.LIV

Let an agent handle cousin relations by degree, removal, genealogy, genetics and cultural terminology, with privacy and no legal advice.

Thing Registry Physical world and living systems

Research draft, second pass

A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.

written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify

Researched by: Claude

Purpose and description

Let an agent handle cousin relations by degree, removal, genealogy, genetics and cultural terminology, with privacy and no legal advice.

A relative who is a child of a parent sibling (first cousin), or more distantly related through common ancestors (second, third cousins and cousins removed); terminology varies greatly between languages and cultures.

What it is for: Describing family relationships.

It can be work out cousin degree and removal; record cousins in genealogy; estimate shared DNA ranges; translate kinship terms.

Distinguishing features

Shared ancestors, not parents or siblings

Degrees and removals

Culturally varied terms

Legal rules vary

What it looks like

Not physical; a relation between people.

Physical character

expected shared DNA, first cousins: about 12.5 % - average

How it is recognised

First, second, third cousins

Once or twice removed

Many languages distinguish maternal and paternal cousins

Related models

is a kind of - category

relative

is recorded in - genealogy

family tree

is related to - language

kinship terminology

is related to - other relation

half-sibling

In practice

Families and kinds

first cousins

second and third cousins

cousins removed

double cousins

parallel and cross cousins

Standards and regulation

GEDCOM genealogy standard

Marriage and succession law on relatives

Failure modes and hazards

Revealing private family information

Misreading DNA results

Also called

female cousinmale cousinthird uncledaughter of mother's sister's sonthird auntelder male cousinmaternal cousinpaternal cousinhalf first cousin once removed ascendinghalf first cousin once removed descendinghalf first cousin twice removed ascendinghalf first cousin twice removed descendinghalf first cousin 3 times removed ascendinghalf first cousin 3 times removed descendinghalf second cousin once removed ascendinghalf first cousin 4 times removed ascendinghalf first cousin 4 times removed descendingthird cousin once removed descendinghalf first cousin 5 times removed ascendinghalf first cousin 5 times removed descendinghalf second cousin 3 times removed ascendinghalf third cousin once removed ascendinghalf third cousin once removed descendingthird cousin twice removed descendinghalf first cousin 6 times removed ascendinghalf first cousin 6 times removed descendinghalf second cousin 4 times removed descendinghalf third cousin twice removed ascendinghalf third cousin twice removed descendingthird cousin 3 times removed ascendingfourth cousin once removed ascendingfourth cousin once removed descendinghalf second cousin 5 times removed ascendinghalf second cousin 5 times removed descendinghalf third cousin 3 times removed ascendinghalf third cousin 3 times removed descendinghalf fourth cousin once removed ascendinghalf fourth cousin once removed descendingthird cousin 4 times removed descendingfourth cousin twice removed ascending

+777

Where this came from

wikidata · CC0 1.0

Source repository Registry entry point

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.

Relation Degree.

Degrees need calculation.

Degree

First, second.

Degree

Cousin degree.

  1. What is the cousin degree and removal between these two people? measurement
  2. Who is the common ancestor? provenance

Terms

Culture.

Terms

Kinship terms.

  1. Which kinship term applies in this language or culture? provenance
  2. Does it distinguish maternal and paternal sides? definition
Genealogy Records.

Records need sources.

Records

Family tree.

Records

Records.

  1. Which documents confirm the relation? provenance
  2. How is it recorded in a family tree? action

Privacy

Living people.

Privacy

Privacy.

  1. Does the information concern living people who have not consented? boundary
  2. How should it be protected? action
Genetics DNA.

DNA estimates relatedness.

Shared DNA

Ranges.

Shared DNA

Shared DNA.

  1. What range of shared DNA is typical for this relation? measurement
  2. Can tests distinguish it from other relations? boundary

Surprises

Unexpected results.

Surprises

Unexpected results.

  1. Has a DNA test revealed an unexpected relationship? boundary
  2. Which support services exist? provenance
Law Legal context.

Law varies.

Rules

Marriage and succession.

Rules

Legal rules.

  1. How does the law here treat cousins, in general terms? provenance
  2. Where is official information? provenance

Advice

Professionals.

Advice

Advice limit.

  1. Is the user asking about their own legal case? boundary
  2. How should they be referred to a lawyer? action

What the second pass must settle

  • Should each cousin degree be a separate entry?
  • How should kinship systems be linked?
  • How should privacy be protected?
Draft as JSON