Zimmermann, Mary D. of Port Jefferson Station on February 21, 2015. Beloved wife of George. Loving mother of Karen Gabriele, Roberta Walker, Mark Zimmermann and the late Paul A. Zimmermann. Cherished grandmother of Michael, Thomas, Christopher, Paula, Brendon, Laura, Leah, Justin and Daniel. Adored great grandmother of Matthew, Christopher and Charlotte. Dear sister of Pauline and Rose. Reposing at the O.B. Davis Funeral Home, 4839 Nesconset Hwy. (Route 347), Port Jefferson Station, L.I. Visitation Monday 2-4 & 7-9 PM. Funeral Service Monday evening 8 PM at the funeral home. Closing prayer Tuesday 10 am. Interment to follow at Pinelawn Memorial Park.