efnasamband
Efnasamband is a term used in Icelandic and other Nordic languages to denote kinship or familial relationship between individuals or groups. It refers to connections through shared ancestry, and can cover both blood relationships (consanguinity) and, in some contexts, ties by marriage (affinity). The concept describes how closely people are related and is often expressed in degrees or as a measure of relatedness.
In anthropology, demography and sociology, efnasamband helps explain family structures, lineage, inheritance patterns, and marriage practices.
Measuring efnasamband involves both historical records and biological data. Pedigree analysis uses generations of documented relationships
Sources of information on efnasamband include genealogical records, civil and church registries, census data, and modern