DIFFLEY, Robert P. on April 20, 2016 of Port Jefferson Station, LI. Beloved son of the late John J. and Mary E. Loving brother of Mary Ellen Kuefner and her husband Ronald, John and his wife Denise and Michael and his wife Erika. Cherished uncle of John, Ryan, Lauren, Devin, Caitlin, Taylor and Michael. Reposing at O.B. Davis Funeral Homes 4839 Nesconset Highway, Port Jefferson Station, LI. Visitation on Sunday from 2-4 and 7-9 PM. Funeral service Monday at 10 AM. Interment to follow at St. Charles Cemetery.