The Enneagram of Personality Types is a modern synthesis of a number of ancient wisdom traditions, but the person who originally put the system together was Oscar Ichazo.
Ichazo was born in Bolivia and raised there and in Peru, but as a young man, moved to Buenos Aires, Argentina to learn from a school of inner work he had encountered. Thereafter, he journeyed in Asia gathering other knowledge before returning to South America to begin putting together a systematic approach to all he had learned.