Pietro Geremia (10 August 1399 – 3 March 1452) was an Italian Roman Catholic priest and a professed member from the Order of Preachers.

[1][2] The shaken Geremia purchased an iron chain as a penitential act from a locksmith the next morning and began to contemplate what his vocation might be.

[4] His fame as a preacher caught the attention of Vincent Ferrer who once visited him and the two discussed spiritual matters at great lengths.

Geremia was seen as one of the finest preachers on the island and preached in the open often because the churches never could hold the vast number of people that flocked to see him.

[1][2] Geremia was sent to establish regular observance to all those Dominican monasteries in the Sicilian area – in particular Santa Caterina convent – and Pope Eugene IV once called him to Florence in 1439 to help heal the rift between the Greek and Latin churches – he managed a brief union.