4 geniuses born on July 20 — including Petrarch, Gregor Mendel, and more. Explore their biographies, IQ scores, and achievements.
Petrarch, Gregor Mendel, Auguste de Marmont, Cormac McCarthy — 4 geniuses in total share this birthday.
cancer is the zodiac sign for people born on July 20.
Twenty questions, eight minutes on the clock, and a percentile measured against everyone who has taken it. No sign-up.
Take the IQ test →Among the 3 geniuses with known IQ scores born on this date, the average estimated IQ is 163.
Discover history's greatest minds — biographies, IQ scores, quotes, and more.
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