Petersen, Mary, L., of North Babylon, NY on September 7, 2013. Beloved wife of the late William. Cherished mother of William (Peggy), Robert (Joyce) and Barbara. Loving grandmother of Kristen (Shane), Billy, Bobby, and Danielle. Dearest great grandmother of Shane and Daniella. Friends may visit Monday 2-4:30p.m. and 7-9:30p.m. at Claude R. Boyd-Spencer Funeral Homes, 448 West Main Street, Babylon, N.Y. Funeral Mass Tuesday, 10 a.m. at Our Lady of Lourdes RC Church, West Islip. Interment to follow at Holy Rood Cemetery, Westbury. In lieu of flowers, donations can be made to the Alzheimer’s Association. www.boyd-spencer.com