Born On Your Day
John G. Trump
MIT Photo Service (photographer unknown), Public domain, via Wikimedia Commons

inventor

John G. Trump

Inventor · born August 21, 1907 · died 1985

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About

John George Trump was an American electrical engineer and professor at the Massachusetts Institute of Technology (MIT).

Adapted from Wikipedia (CC BY-SA 4.0).

Milestones, by age

Dated facts from Wikidata; ages marked “about” come from year-only dates.

  1. ~29Became professor1936
  2. ~76Received the National Medal of Science1983

Sources

Every fact on this page traces to one of these.

Sources (2)

Also born on August 21

John's most notable birthday twins

Sergey Brin
billionaire

Sergey Brin

Entrepreneur · Google · technology

1973 · United States

$265Breported estimate as of August 2026 · Bloomberg

Sergey Mikhailovich Brin is an American computer scientist and businessman who co-founded Google with Larry Page. He was the president of Google's parent company, Alphabet Inc., until stepping down from the role in 2019.

Steve Jurvetson, CC BY 2.0, via Wikimedia Commons

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Sources (5)
François Pinault
billionaire

François Pinault

Entrepreneur · Kering

1936 · France

$31.6Bolder estimate, as of 2024 · Forbes

François Henri Joseph Pinault is a French billionaire businessman, founder of the luxury group Kering and the investment holding company Groupe Artémis. In the early 1960s, Pinault started a timber-trading business.

S. Plaine, CC BY-SA 4.0, via Wikimedia Commons

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Joe Gebbia
billionaire

Joe Gebbia

Founder · Airbnb · hospitality

1981 · United States

$8Bolder estimate, as of 2025 · Forbes

Joseph Gebbia Jr. is an American designer and entrepreneur, and a co-founder of Airbnb. In 2025, he joined the Department of Government Efficiency (DOGE). Gebbia was appointed by President Donald Trump as the first Chief Design Officer to lead the National Design Studio.

Ryan Lowry, CC BY-SA 4.0, via Wikimedia Commons

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Sources (3)
Mohammed VI of Morocco
billionaire

Mohammed VI of Morocco

Entrepreneur

1963 · Morocco

$5.2Bolder estimate, as of 2015 · Forbes

Mohammed VI is King of Morocco. A member of the Alawi dynasty, he has reigned since 1999. Mohammed was born during the reign of his father, King Hassan II. At an early age, he began partaking in public engagements on behalf of his father.

UN Climate Change, CC BY 2.0, via Wikimedia Commons

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Sources (3)