This oratory belonged to the Compagnia del Crocifisso, which was formed in 1570 and was affiliated in 1573 to the Confraternita del Santissimo Crocifisso of Rome. 

Original Oratory (1587-1642)

The nucleus of the oratory, nearest the entrance, was built in 1587-1642.   Its gilded wooden ceiling (1629-31) was the work of Francesco Costantini and Cristoforo Lacchi.

Crucifix (ca. 1600)

Discovery of the True Cross (1626)

First Extension

The first extension towards the current high altar was effected in 1643, when the confraternity purchased the orchard behind their original structure from the friars of San Domenico.

Christ Adored by Angels and the Fall of Lucifer (1666)

The attribution of this fresco on the ceiling to Giovanni Battista Michelini was recently confirmed by the discovery of the contract for it, written between the artist and the Compagnia del Crocifisso in 1666.

Risen Christ (1672)

Second Extension

The final extension towards the current high altar was effected in 1702.  The altar (1706) was carved and gilded by Antonio Calcioni. 

Charity (1706-9)

This fresco at the centre of the ceiling near the high altar and the four frescoes of other virtues that surround it  are attributed to Carlo Lamparelli.