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William Parsons, 3rd Earl of Rosse

William Parsons, 3rd Earl of Rosse, English-Irish astronomer and politician (died 1867)

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Born
June 17, 1800
Died
October 31, 1867
Zodiac sign
Gemini
Birth year
1800

About William Parsons, 3rd Earl of Rosse

William Parsons, 3rd Earl of Rosse, was an English engineer and astronomer. He built several giant telescopes. His 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. Lord Rosse performed astronomical studies and discovered the spiral nature of some nebulae, today known to be spiral galaxies. Richard Clere Parsons (21 February 1851 – 26 January 1923), apparently known for developing railways in South America. Sir Charles Algernon Parsons (13 June 1854 – 11 February 1931), known for inventing the steam turbine.

Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.

William Parsons, 3rd Earl of Rosse timeline

  1. His 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.
  2. Richard Clere Parsons (21 February 1851 – 26 January 1923), apparently known for developing railways in South America.
  3. Sir Charles Algernon Parsons (13 June 1854 – 11 February 1931), known for inventing the steam turbine.

The world when William Parsons, 3rd Earl of Rosse was born

William Parsons, 3rd Earl of Rosse was born in 1800. The year snapshot below places that birthday in its cultural and historical setting: the music and films people were following, the headlines shaping public life, and the everyday prices families encountered.

Headlines and milestones

  • Top headlineUS capital moves to Washington, D.C.
  • Technology milestoneAlessandro Volta invents the electric battery
  • World population~900M

United States snapshot

  • U.S. leaderJohn Adams
  • U.S. population5.3M

1800 versus 2026

These figures put everyday life in William Parsons, 3rd Earl of Rosse's birth year beside the site's latest United States snapshot.

Measure18002026
Population5.3M341 million

Sources and editorial standards

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