Giacomo Cusmano was an Italian priest and surgeon who lived in Palermo during the 19th century. After completing his medical studies with honors, he dedicated his life to aiding impoverished peasants, often demonstrating great kindness to those working on his family's estates. Driven by the increasing misery of the poor, he entered the priesthood and founded the Congregation of the Missionaries of the Servants of the Poor, also known as the Boccone del Povero, as well as the Sisters Servants of the Poor.