Pietro Montanini initially trained under his uncle, Giovanni Francesco Bassotti.  He moved to Rome in 1644, where he worked under Pietro da Cortona and Salvator Rosa.  He returned to his native Perugia in ca. 1658.  He belonged to the Confraternita di San Sebastiano e Rocco in Perugia, and was its Guardian in 1661-2.

His students included Giuseppe Laudati and Mattia Batini.

Perugia

Panels (ca. 1665)

These lunette-shaped panels on the left wall of the Oratorio degli Artisti in the Chiesa del Gesù, which are initialled by Pietro Montanini and dated 166.., depict:

1. ✴the Presentation of Christ at the Temple (on the left); and
   

2. ✴the Visitation.
   

Scenes from the Lives of SS Sebastian and Roch (1667)

                              St Roch cures a plague  victim              Martyrdom of St Sebastian

These frescoes on the walls of SS Sebastiano e Rocco, which are dated by an inscription under a miracle of St Roch, were recorded in 1736 as the work of Pietro Montanini.  The attribution is supported on stylistic grounds and by the fact that he belonged to the confraternity that owned this church. 

SS Onuphrius and John the Baptist (ca. 1667)

These frescoes on the arch leading to the chapel on the right in  SS Sebastiano e Rocco, which are attributed to Pietro Montanini, depict the standing saints as hermits.

St Onuphrius and Scenes from his Life (1672)

This panel, which is dated by inscription, depicts the standing hermit saint surrounded by 14 scenes from his life.  It came from an altar in Sant’ Elisabetta that belonged to the Collegio dei Tintori (dyers’ guild), whose patron saint was St Onuphrius.  It is now in the sacristy of SS Sebastiano e Rocco.  It is attributed to Pietro Montanini on stylistic grounds, not least because of its similarity to a painting of this saint by Montanini in SS Sebastiano e Rocco (see above).

Madonna and Child with saints (1674)

SS John the Baptist and Gregory the Great (1674)

According to the guide to Perugia written by Serafino Siepi in 1822, these panels in the apse of San Filippo Neri were commissioned from Pietro Montanini to mark the 50th anniversary of the unification of the parishes of San Giovanni Rotunda and San Gregorio with that of San Filippo Neri.

Christ and St John the Baptist (ca. 1685)

This panel, which is attributed to Pietro Montanini, came from the Collezione Sapori and is now in the Galleria Nazionale.  It depicts Christ and St John the Baptist as young boys, with a group of angels, set in a landscape.

Soldiers in a Landscape (17th century)

This panel in the Collection of the Fondazione Cassa di Risparmio di Perugia, which is otherwise of unknown provenance, is attributed to Pietro Montanini.

Assisi

Martyrdom of St Laurence (1679-80)

A surviving document records that, in 1680, Pietro Montanini was commissioned to paint a banner for one of the confraternities of Assisi (probably the Confraternita dei San Lorenzo) that Giacomo Giorgetti had left unfinished when he died in 1679.  [Where is it now?]

[Is this the banner in the Museo Diocesano?? ]

Città di Castello

Pietro Montani, who is absent from the documentary records of Perugia from late 1674 until 1676, seems to have spent this time in Città di Castello.

Panels in Santa Barbara (1675)

An 18th century manuscript records that a local artist named Giovanni Francesco Panichi painted scenes in lunettes in the tribune of the Oratorio di Santa Barbara, using designs by Pietro Montanini, and that the latter retouched them.  These lunettes depict:

1. ✴the martyrdom of St Barbara; and
   

2. ✴the Annunciation to the Shepherds.
   

Works in the Duomo (ca. 1675)

The following works attributed to Pietro Montanini are in the Duomo:

St Michael expelling the rebel angels

Girolama Bandini, the wife of Chiappino Vitelli commissioned this fresco (now badly damaged) for the vault of the Cappella dell’ Angelo Custode.

Frescoes (ca. 1675)

The brothers Nicolò and Annibale Longini commissioned these frescoes for the vaults of the the Cappella di San Paolo.  They depict Christ in Glory, flanked by two scenes from the life of St Paul.

Mystical Marriage of St Catherine

Foligno

Tondi (17th century)

These six circular panels in the sacristy of San Nicolò, which are attributed to Pietro Montanini, depict:

1. ✴the Presentation of the Virgin;
   

2. ✴the Nativity (very damaged);
   

3. ✴the Adoration of the Shepherds;
   

4. ✴the Flight to Egypt;
   

5. ✴Jesus with the Doctors in the Temple; and
   

6. ✴ the Risen Christ and St Mary Magdalene (noli me tangere).