Cardano, Girolamo

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Portrait of Jerome Cardan (click to view image source)
Jerome Cardan
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Cardan, Jerome Gender: M
born on 4 October 1501 (greg.) at 18:29 (= 6:29 PM )
Place Pavia, Italy, 45n10, 9e10
Timezone LMT m9e10 (is local mean time)
Data source
Rodden Rating B
Collector: Rodden
Astrology data s_su.18.gif s_libcol.18.gif 10°41' s_mo.18.gif s_piscol.18.gif 10°39 Asc.s_taucol.18.gif 06°21'


Italian physician, famed from 1526; by age 50 he had a reputation second only to Vesalius.

Born illegitimate, though his parents did marry later, Cardan completed his studies in his mid-20's only to find that his bastardy barred him from entry into the College of Physicians in Milan. Always contentious and sharp-tongued, he had been unwisely critical in both conversation and writing in one of his earlier medical reviews, which had not endeared him to the College board. He was reduced to working as a doctor in small towns away from the medical elite of Milano. It was not until 1535 that he received an appointment to give public lectures in mathematics, a position once held by his father. The following year, he published his first works in math and medicine.

Though astrology held his interest, it was the simple expediency of needed income that first drew him and he entered the professional world of astrology in 1534 with his first publication, a pamphlet filled with short and long term predictions. As a poor young doctor, too proud to beg or borrow, he wrote astronomical tables for his income.

As an astrologer, he published many books until charged by the Inquisition with heresy and imprisoned for two months in Bologna. He then moved to Rome in 1571 and was granted a pension by the pope, which he lived on for the rest of his life.

Cardan was deeply grieved when his older son, Giambattista, a gifted doctor in his own right, was arrested, tried, convicted and executed in 1569 for murdering his wife with poison and when his younger son, Aldo, turned out to be a ne'er-do-well and petty thief.

Cardan died 9/21/1576. Legend has it that he predicted the date of his death.

Link to Wikipedia biography



  • Death, Cause unspecified 20 September 1576 (greg.) (Age 75)
    chart Placidus Equal_H.
  • Death of Child 14 April 1560 (greg.) (Son beheaded, 4/09 OS)
    chart Placidus Equal_H.

Source Notes

LMR quotes "Giralmo Cardano: Book of My Life," translated from the Latin by Jean Stoner, 1930, p.4, "I was born normally September 24, 1501 when the first hour of the night was more than half run but less than two-thirds." (September 25, Florentine time, 6:40 PM LAT) All editions of the "De Colsolations Liber III, Vol 1" give 1500, but in his own horoscope he gives the date and hour as above.

Biography: Anthony Grafton, "Cardano's Cosmos: The Worlds and Works of a Renaissance Astrologer," Harvard University Press, 1999.

I want to let you know about a review I have written on the book *Cardano's Cosmos* by Anthony Grafton of Princeton University. Cardano was the first astrologer ever to utilize the printing press to publish massive quantities of birth charts with relevant biographical and analytic material.

All through the book I kept thinking "this must have been Lois in a previous Renaissance incarnation!"

The review will appear in the next issue of CURA in a couple of weeks in my new book review column "De Docta Astrologia" (concerning learned astrology".

I hope all is well for you, and that your upcoming Saturn transit is acompanying the honors you so deserve!




  • Vocation : Medical : Physician
  • Vocation : Occult Fields : Astrologer (Pro)
  • Family : Parenting : Kids -Traumatic event (One son executed; the other a thief)
  • Passions : Criminal Perpetrator : Civil/ Political (Imprisoned by Inquisition for heresy, two months)
  • Notable : Book Collection : Occult/ Misc. Collection
  • Notable : Famous : Top 5% of Profession (Physician)
  • Vocation : Writers : Astrology (Many books)