Mary Lou Dunn- Lifelong resident of Oyster Bay on December 14, 2019. Beloved wife of Robert. Loving mother of Kim, Scott (Jim), Chris (Linda),Steven (Michelle). Cherished grandmother of Michael (Amanda), Kristin, Anthony, Brandon, Ben, Steven, Emily, and Julie. and Great-Grandmother of Mackenzie & Abigail.  Dear sister of Pat (Ralph) Siniscalchi.  Funeral Mass Saturday 10:30 a.m. St. Dominic's R.C.Chapel. In lieu of flowers donations may be made to American Diabetes Association.