Spanish form of Jerome, from Greek 'Hieronymos' meaning 'sacred name.'
Jeronimo is the Spanish and Portuguese form of Jerome, which traces back to the Greek "Hieronymos" — a compound of "hieros" (sacred, holy) and "onoma" (name), together meaning "one who bears a holy name" or "sacred name." The name entered European consciousness primarily through Saint Jerome — born Eusebius Sophronius Hieronymus around 347 AD — whose monumental translation of the Bible into Latin, known as the Vulgate, shaped Western Christianity for over a millennium. Jerome was famously irascible, brilliantly learned, and utterly committed to scholarly exactness, making him the patron saint of translators, librarians, and encyclopedists.
In Renaissance painting, he is invariably depicted in desert asceticism, a lion lying peacefully at his feet. In the Spanish-speaking world, Jerónimo carries the full weight of this saint's legacy and then some. The name became irrevocably linked to one of history's most celebrated acts of resistance through Geronimo — properly, Goyaałé in his own Chiricahua Apache language, but known to his adversaries by the Spanish name Jerónimo.
The Apache leader's decades-long resistance to the US Army in the American Southwest transformed his name into a universal symbol of defiance, courage, and indomitable spirit. American paratroopers adopted his name as a battle cry during World War II, a tradition that has given the name electric, mythic resonance in English-language culture far beyond its religious origins. Today Jeronimo (and its variant Jerónimo) remains a distinguished choice in Spanish-speaking communities — weighty with sanctity, fired with warrior spirit, and carrying the long arc of history from fourth-century Dalmatia to the mountains of Sonora. It is a name for someone expected to leave a mark.