# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/william-parsons-3rd-earl-of-rosse
# Generated: 2026-08-16T05:56:58.800Z

schema: https://schema.org/Person
url: "https://fame.am/person/william-parsons-3rd-earl-of-rosse"
name: "William Parsons, 3rd Earl of Rosse"
slug: "william-parsons-3rd-earl-of-rosse"
description: "William Parsons, 3rd Earl of Rosse, was an English engineer and astronomer. He built several giant telescopes.\nHis 72-inch telescope, built in 1845 and colloquially known as the \"Leviathan of Parsonstown\", was the world's largest telescope, in terms of aperture size, until the early 20th century. From April 1807 until February 1841, he was styled as Baron Oxmantown."
tagline: "Anglo-Irish astronomer (1800-1867)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/William_Parsons%2C_3rd_Earl_of_Rosse_by_Maull_and_Polyblank_crop.jpg?width=1200"
gender: "male"
category:
  name: "Scientists"
  slug: "scientists"
profileType:
  name: "Scientist"
  slug: "scientist"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1800-06-17"
deathDate: "1867-10-31"
livingStatus: "DECEASED"
scores:
  popularity:           52.18
  momentum:             1.12781954887218
  historical:           21.19021333333334
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  60
  trendDirection:       "STABLE"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://ja.wikipedia.org/wiki/%E3%82%A6%E3%82%A3%E3%83%AA%E3%82%A2%E3%83%A0%E3%83%BB%E3%83%91%E3%83%BC%E3%82%BD%E3%83%B3%E3%82%BA_(%E7%AC%AC3%E4%BB%A3%E3%83%AD%E3%82%B9%E4%BC%AF%E7%88%B5)"
    title: "ウィリアム・パーソンズ (第3代ロス伯爵)"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D9%88%D9%8A%D9%84%D9%8A%D8%A7%D9%85_%D8%A8%D8%A7%D8%B1%D8%B3%D9%88%D9%86%D8%B2"
    title: "ويليام بارسونز"
    type:  "WIKIPEDIA"
  - url: "https://arz.wikipedia.org/wiki/%D9%88%D9%8A%D9%84%D9%8A%D8%A7%D9%85_%D9%BE%D8%A7%D8%B1%D8%B3%D9%88%D9%86%D8%B2"
    title: "ويليام پارسونز"
    type:  "WIKIPEDIA"
  - url: "https://azb.wikipedia.org/wiki/%D9%88%DB%8C%D9%84%DB%8C%D8%A7%D9%85_%D8%A8%D8%A7%D8%B1%D8%B3%D9%88%D9%86%D8%B2"
    title: "ویلیام بارسونز"
    type:  "WIKIPEDIA"
  - url: "https://az.wikipedia.org/wiki/Vilyam_Parsons_(lord_Ross)"
    title: "Vilyam Parsons (lord Ross)"
    type:  "WIKIPEDIA"
  - url: "https://be.wikipedia.org/wiki/%D0%A3%D1%96%D0%BB%D1%8C%D1%8F%D0%BC_%D0%9F%D0%B0%D1%80%D1%81%D0%B0%D0%BD%D1%81_(%D0%BB%D0%BE%D1%80%D0%B4_%D0%A0%D0%BE%D1%81)"
    title: "Уільям Парсанс (лорд Рос)"
    type:  "WIKIPEDIA"
  - url: "https://bs.wikipedia.org/wiki/William_Parsons_Rosse"
    title: "William Parsons Rosse"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/William_Parsons%2C_3._Earl_of_Rosse"
    title: "William Parsons, 3. Earl of Rosse"
    type:  "WIKIPEDIA"
  - url: "https://diq.wikipedia.org/wiki/William_Parsons_(Lord_Ross)"
    title: "William Parsons (Lord Ross)"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/William_Parsons%2C_3rd_Earl_of_Rosse"
    title: "William Parsons, 3rd Earl of Rosse"
    type:  "WIKIPEDIA"
  - url: "https://eo.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://eu.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://fa.wikipedia.org/wiki/%D9%88%DB%8C%D9%84%DB%8C%D8%A7%D9%85_%D8%A8%D8%A7%D8%B1%D8%B3%D9%88%D9%86%D8%B2"
    title: "ویلیام بارسونز"
    type:  "WIKIPEDIA"
  - url: "https://fi.wikipedia.org/wiki/Lordi_Rosse"
    title: "Lordi Rosse"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://ga.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%95%D7%99%D7%9C%D7%99%D7%90%D7%9D_%D7%A4%D7%A8%D7%A1%D7%95%D7%A0%D7%A1%2C_%D7%A8%D7%95%D7%96%D7%9F_%D7%A8%D7%95%D7%A1_%D7%94%D7%A9%D7%9C%D7%99%D7%A9%D7%99"
    title: "ויליאם פרסונס, רוזן רוס השלישי"
    type:  "WIKIPEDIA"
  - url: "https://hi.wikipedia.org/wiki/%E0%A4%B5%E0%A4%BF%E0%A4%B2%E0%A4%BF%E0%A4%AF%E0%A4%AE_%E0%A4%AA%E0%A4%BE%E0%A4%B0%E0%A5%8D%E0%A4%B8%E0%A4%A8%E0%A5%8D%E0%A4%B8%2C_%E0%A4%B0%E0%A5%8B%E0%A4%B8%E0%A5%87_%E0%A4%95%E0%A5%87_%E0%A4%A4%E0%A5%80%E0%A4%B8%E0%A4%B0%E0%A5%87_%E0%A4%85%E0%A4%B0%E0%A5%8D%E0%A4%B2"
    title: "विलियम पार्सन्स, रोसे के तीसरे अर्ल"
    type:  "WIKIPEDIA"
  - url: "https://hr.wikipedia.org/wiki/William_Parsons_Rosse"
    title: "William Parsons Rosse"
    type:  "WIKIPEDIA"
  - url: "https://hu.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://id.wikipedia.org/wiki/William_Parsons%2C_3rd_Earl_of_Rosse"
    title: "William Parsons, 3rd Earl of Rosse"
    type:  "WIKIPEDIA"
  - url: "https://it.wikipedia.org/wiki/William_Parsons"
    title: "William Parsons"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q310121"
    title: "Wikidata"
    type:  "WIKIDATA"

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