Abu Mūsā Jābir ibn Hayyān
Arabic: جابر بن حیان‎
Latinized: Geber

—born c. 721 in Tus, Persia; died c. 815 in Kufa, Iraq

Chemist and alchemist, astronomer and astrologer, engineer, geographer, philosopher, physicist, and pharmacist and physician. Sometimes referred to as the father of early chemistry

In 13th-century Europe an anonymous writer, usually referred to as Pseudo-Geber, produced alchemical and metallurgical writings under the pen-name Geber.

The Geber / Pseudo-Geber corpus includes hundreds of books including the Arabic original of the Emerald Tablet (Tabula Smaragdina)

The term “gibberish” may come from his latinized name, since his texts were written in deliberately obscure code.