# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/henry-gellibrand
# Generated: 2026-08-14T08:29:19.182Z

schema: https://schema.org/Person
url: "https://fame.am/person/henry-gellibrand"
name: "Henry Gellibrand"
slug: "henry-gellibrand"
description: "Henry Gellibrand (1597–1637) was an English mathematician. He is known for his work on the Earth's magnetic field. He discovered that magnetic declination – the angle of dip of a compass needle – is not constant but changes over time. He announced this in 1635, relying on previous observations by others, which had not yet been correctly interpreted."
tagline: "English mathematician (1597-1637)"
gender: "male"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1597-11-17"
deathDate: "1637-02-16"
livingStatus: "DECEASED"
scores:
  popularity:           37.67
  momentum:             0
  historical:           10.26904266666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  45
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://uk.wikipedia.org/wiki/%D0%93%D0%B5%D0%BD%D1%80%D1%96_%D2%90%D0%B5%D0%BB%D0%BB%D1%96%D0%B1%D1%80%D0%B0%D0%BD%D0%B4"
    title: "Генрі Ґеллібранд"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%87%D9%86%D8%B1%D9%89_%D8%AC%D9%8A%D9%84%D9%8A%D8%A8%D8%B1%D8%A7%D9%86%D8%AF"
    title: "هنرى جيليبراند"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://ja.wikipedia.org/wiki/%E3%83%98%E3%83%B3%E3%83%AA%E3%83%BC%E3%83%BB%E3%82%B2%E3%83%AA%E3%83%96%E3%83%A9%E3%83%B3%E3%83%89"
    title: "ヘンリー・ゲリブランド"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://ro.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%93%D0%B5%D0%BB%D0%BB%D0%B8%D0%B1%D1%80%D0%B0%D0%BD%D0%B4%2C_%D0%93%D0%B5%D0%BD%D1%80%D0%B8"
    title: "Геллибранд, Генри"
    type:  "WIKIPEDIA"
  - url: "https://sl.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Henry_Gellibrand"
    title: "Henry Gellibrand"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q706830"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump