The origins of the church of Roncajette are traced back to around 1130 when it was attested in a bishop’s document of the time, it is dedicated to St. Fidenzio, who seems to have been an Eastern bishop, perhaps of Armenian origin, martyr in the early Christian times.
In a plaque above the internal door of the bell tower recalls a first reconstruction, which took place in 1266, at the time of the priest Orandino da Clesure. The current building is in the shape defined during the renovation of the eighteenth century, when the church, enlarged and elongated, was completely overturned so as to place the main facade to the east and the apse to the west.
It boasts a polyptych dating back to the early 15th century, the work of an artist known as Master of Roncajette, when he decorated the high altar of the church preceding the renovated one. It is a tempera painting on a wooden board and consists of ten compartments. At the centre in the lower register is depicted the Madonna enthroned with the Child, on the right San Lorenzo and San Giacomo, and on the left San Fidenzio and San Bartolomeo. In the upper part of the center Christ Crucified with the feet of the Madonna and St. John the Evangelist. Also in the upper right the Archangel Gabriel and St. John the Baptist, while on the left the Madonna of the Annunciation and St. Lucia.
