Born in Naples, Giulio died in Ferrara[1] or Rome, where he painted for the last twenty years of his life.
His adherence to the pictorial manner of the master was such that some of his copies of Jordanian compositions (battles, above all) were sold as original works of the same Giordano.
He painted two canvases, one of a Miracle of St Dominic and the Apparition of the Virgin to the Shepherdess, for the church of Rosariello delle Pigne, outside of the Porta di Gennaro.
[5] Towards the end of the second decade of the eighteenth century he moved to Rome, though he maintained close contacts with the Neapolitan artistic environment.
The frescoes on the vault of San Francesco di Paola ai Monti in Rome are by Onofrio.