Our Lady of the Valley Parish is a member Parish of the Roman Catholic Diocese of Rochester, New York.  The community is nestled in the beautiful Canisteo Valley of Western New York State. Our lady of the Valley Parish encompases over 450 square miles of the Southern Tier and includes the churches of St. Ann and St. Mary's.  Masses are celebrated at both St. Ann's Church in Hornell, and St. Mary's Church in Rexville.