http://hl7.org/fhir/StructureDefinition/humanname-own-name|4.0.1

The portion of the family name that is derived from the person's own surname, as distinguished from any portion that is derived from the surname of the person's partner or spouse.
{
  "description": "The portion of the family name that is derived from the person's own surname, as distinguished from any portion that is derived from the surname of the person's partner or spouse.",
  "package": "hl7.fhir.r4.core@4.0.1",
  "date": "2015-11-22T00:00:00Z",
  "derivation": "constraint",
  "publisher": "Health Level Seven, Inc. - FHIR Core WG",
  "fhirVersion": "4.0.1",
  "name": "own-name",
  "mapping": [ {
    "uri": "http://hl7.org/v2",
    "name": "HL7 v2 Mapping",
    "identity": "v2"
  }, {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "fhirversion": null,
  "title": null,
  "versionAlgorithmCoding": null,
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "fhir"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 1
  } ],
  "status": "draft",
  "id": "7ae4ea22-de1c-5c9b-bcee-82e8eeb97280",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/StructureDefinition/humanname-own-name",
  "identifier": null,
  "context": [ {
    "type": "element",
    "expression": "HumanName.family"
  } ],
  "versionAlgorithmString": null,
  "fhir_id": null,
  "version": "4.0.1",
  "contact": [ {
    "telecom": [ {
      "value": "http://hl7.org/special/committees/FHIR",
      "system": "url"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}