Slifka - Agatha, of Northport Village on August 26, 2011. Beloved wife of the late William J. Slifka. Loving mother of Joan (John) Mc Kinney, Chris (Gary) Sirota, Don (Janet Duffy) Slifka, and Nancy (Jeff) Sullivan. Beloved grandmother of Jill, Dee, Sandra, Todd, Daniel and Lara. Caring great grandmother of Tim, Steven, Savannah, Olivia, Abigail, Gavin, Noah and Dylan.