Tommaso da Cori (4 June 1655 - 11 January 1729) - born Francesco Antonio Placidi - was an Italian Roman Catholic priest and a professed member of the Order of Friars Minor who lived as a hermit for much of his religious life.

In 1683 - following the successful completion of his studies - he was ordained to the priesthood (he celebrated his first Mass in Velletri) and was at once appointed as the assistant master of novices in Orvieto.

[2][3] Fra Tommaso followed the model of hermit life that Francis of Assisi had established in that he did not remain enclosed within the hermitage but would instead go out preaching in the small villages throughout the region.

The third and final miracle needed for sainthood was investigated and validated under the Congregation for the Causes of Saints before receiving the approval of a medical board on 29 January 1998.

on 19 January 1999 at which point Pope John Paul II issued definitive approval to the miracle on 26 March 1999 and canonized the friar in Saint Peter's Square on 21 November 1999.