Welcome to Immaculate Conception Catholic Church located in Wellsville, NY. Our Pastor is Father Sean DiMaria, who was appointed by the Bishop in April 2011. Immaculate Conception is the largest Catholic Church in Allegany County and currently has 618 registered families. Our School has been providing Catholic education to students since 1876. Our staff members are enthusiastic in their mission to use their God given talents to serve the needs of the parish and the community.