# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/andrew-ellicott-douglass
# Generated: 2026-08-15T00:54:52.819Z

schema: https://schema.org/Person
url: "https://fame.am/person/andrew-ellicott-douglass"
name: "Andrew Ellicott Douglass"
slug: "andrew-ellicott-douglass"
description: "A. E. Douglass was an American astronomer and archaeologist. He discovered a correlation between tree rings and the sunspot cycle, and founded the discipline of dendrochronology, which is a method of dating wood by analyzing the growth ring pattern. He started his discoveries in this field in 1894 when he was working at the Lowell Observatory. During this time he was an assistant to Percival Lowell, but fell out with him when his experiments made him doubt the existence of artificial \"canals\" on Mars and visible spokes on Venus."
tagline: "American astronomer and dendrochronologist (1867 - 1962)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Andrew_Ellicott_Douglass.png?width=1200"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1867-07-05"
deathDate: "1962-03-20"
livingStatus: "DECEASED"
scores:
  popularity:           45.08
  momentum:             0
  historical:           14.47995066666667
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://uk.wikipedia.org/wiki/%D0%95%D0%BD%D0%B4%D1%80%D1%8E_%D0%95%D0%BB%D0%BB%D1%96%D0%BA%D0%BE%D1%82_%D0%94%D1%83%D0%B3%D0%BB%D0%B0%D1%81"
    title: "Ендрю Еллікот Дуглас"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%A3._%D8%A5%D9%8A._%D8%AF%D9%88%D8%AC%D9%84%D8%A7%D8%B3"
    title: "أ. إي. دوجلاس"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D8%A7._%D8%A7%D9%89._%D8%AF%D9%88%D8%AC%D9%84%D8%A7%D8%B3"
    title: "ا. اى. دوجلاس"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D8%A7%DB%8C._%D8%A6%DB%8C._%D8%AF%D8%A7%D9%82%D9%84%D8%A7%D8%B3"
    title: "ای. ئی. داقلاس"
    type:  "WIKIPEDIA"
  - url: "https://da.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://el.wikipedia.org/wiki/%CE%86%CE%BD%CF%84%CF%81%CE%B9%CE%BF%CF%85_%CE%88%CE%BB%CE%B9%CE%BA%CE%BF%CF%84_%CE%9D%CF%84%CE%AC%CE%B3%CE%BA%CE%BB%CE%B1%CF%82"
    title: "Άντριου Έλικοτ Ντάγκλας"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/A._E._Douglass"
    title: "A. E. Douglass"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/A._E._Douglass"
    title: "A. E. Douglass"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D8%A7%DB%8C.%D8%A6%DB%8C._%D8%AF%D8%A7%DA%AF%D9%84%D8%A7%D8%B3"
    title: "ای.ئی. داگلاس"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://lt.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://nn.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://no.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://ro.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://sv.wikipedia.org/wiki/Andrew_Ellicott_Douglass"
    title: "Andrew Ellicott Douglass"
    type:  "WIKIPEDIA"
  - url: "https://ta.wikipedia.org/wiki/%E0%AE%8F._%E0%AE%88._%E0%AE%9F%E0%AE%B5%E0%AF%81%E0%AE%95%E0%AE%BF%E0%AE%B3%E0%AE%BE%E0%AE%9A%E0%AF%81"
    title: "ஏ. ஈ. டவுகிளாசு"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q504597"
    title: "Wikidata"
    type:  "WIKIDATA"

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