Allegretti was born in Monteprandone, and trained in Venice, following the style of Giacomo Bassano.Rassegna bibliografica dell'arte italiana by Egidio Calzini, (1898), page 187. In the Province of Ascoli, he left a number of works including in the church of San Agostino in Monteprandone, an Offida and an Adoration of the Magi; in the church of San Bartolomeo at Ascoli Piceno, a Martyrdom of San Bartholomew (1605-8). His masterwork is considered to be the triptych of the Adoration of the Magi (1611) in the Cathedral of Sant'Emidio at Ascoli Piceno.Encyclopedia Treccani short biography by Luigia Maria Tosi (1929).
