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Zwelfer [Zwelffer, Zwölfer], Johann

1. Dates
Born: Rhenish Palatinate, 1618 died; probably Vienna, 1668.
Died: --
Dateinfo: 50
2. Father
Occupation: Unknown
No information on financial status.
3. Nationality
Birth: Rhenish Palatinate, Germany
Career: Vienna, Austria
Death: Vienna, Austria (presumably)
4. Education
Schooling: Padua, M.D.
After working as an apothecary for 16 years, Zwelfer went to Padua to study medicine, and received an M.D. there. Even with the unusual chronology, I'll assume the equivalent of a B.A.
5. Religion
Affiliation: Catholic (by assumption from his career).
6. Scientific Disciplines
Primary: Pharmacology
Subordinate: Chemistry, Botany
7. Means of Support
Primary: Apothecary, Medicine
He worked initially for 16 years in his native region as an apothecary.
After receiving his M.D., he moved to Vienna, where he apparently stayed for the rest of his life. He reportedly taught chemistry and was physician to the court, but these reports are undocumented. Nevertheless, in the silence I assume, especially in light of his background as apothecary, that he put the medical degree to use.
8. Patronage
Type: None
He might have had imperial patronage in Vienna, but I have found no confirmation of this. I won't list it.
9. Technological Involvement
Types: Pharmacology, Medical Practice
10. Scientific Societies
Memberships: None
  1. Christian Gottlob Joecher, Allgemeines Gelehrten-Lexicon, (Leipzig, 1750-1751; repr., Hildesheim: Georg Olms, 1960).
  2. Partington, 2, 296-7.
Compiled by:
Richard S. Westfall
Department of History and Philosophy of Science
Indiana University

Note: the creators of the Galileo Project and this catalogue cannot answer email on geneological questions.

©1995 Al Van Helden
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