[1] The year of Giovanni Giacomo de Antiquis's birth in the city of Corato, Italy is not known.
He joined the staff of the Conservatorio dei Poveri di Gesù Cristo [it], a music conservatory in Naples, where he was a voice teacher and a chaplain from 1606 through 1608.
Most of his surviving music is contained within two anthologies of music which he gathered and which were published in 1574: Il primo libro delle villanelle alla napolitana and Il secondo libro delle villanelle alla napolitana.
Collectively, these two anthologies include thirteen villanelles by Antiquis which are written in 3-part vocal harmony.
[1] Some of his compositions are contained in Il primo libro a due voci de diversi autori di Bari (Venice 1585).