Pierro, Mary S. of Coram on August 1, 2015. Beloved wife of the late Anthony. Devoted mother of Lily and her husband Peter, Alberta, Sylvia and her husband Sal, Laura and her husband Larry and Mary Ann. Cherished grandmother of 12 grandchildren and 23 great grandchildren. Loving sister of Nicholas. The family will receive friends Tuesday and Wednesday from 2 to 4 and 7 to 9 PM at O.B. Davis Funeral Homes, 4839 Nesconset Highway, Port Jefferson Station, New York. Mass will be Thursday 9:45 AM at St. Margaret of Scotland R.C. Church. Interment will follow at Calverton National Cemetery.