The Parish of Saint Catherine of Alexandria, established in 1732 within the Roman Catholic Archdiocese of Jaro, serves the 54 barangays of the Municipality of Leon in the province of Iloilo, Philippines In 1738, it was elevated to a full parish under the patronage of Santa Catalina, Virgen y Martir. The current church structure, built in 1869, sits on a hillside overlooking the town plaza. Throughout its history, the church has served as a landmark during times of conflict, housing American forces during the Philippine-American War and later serving as a Japanese station in 1942. After the Mill Hill Missionaries took administration in 1910, the church faced significant challenges: it was burned during World War II and severely damaged by the "Lady Caycay" earthquake on January 25, 1948. Through the enduring faith and efforts of the townspeople, the church was repaired in 1946 and again in 1976, standing today as a testament to the community's resilience.