Either founded or endowed by the Bishop of Fiesole, the church was originally orientated differently to the existing oratory, and the building essentially caused the once sizeable piazza in which it was built to be bisected. This operation formed what is now known as the Piazza San Martino, which opens out in front of the Buonomini’s oratory and the Piazza del Cimatore.
The church, either built or donated by the Bishop of Fiesole, was initially positioned at an angle to the existing chapel, causing the surrounding square to be split into two parts. This reconfiguration gave birth to the modern Piazza San Martino, which is now flanked by the Buonomini's oratory and the Piazza del Cimatore.