The town was founded by peasants who fled from Motta Santa Lucia after the earthquake of 1638. Moving to the interior, they asked asylum from Prince Cigala of Tiriolo, who allowed them to settle in the area which is today known as "Colla Pagliara", in exchange for the payment of a modest head tax.
They subsequently moved to a lower area which was more sheltered from the wind. The village took name from a small statue of the apostle St. Peter erected in the area.