Dorothy Marder, of Rockville, died Sept. 17. Beloved wife of the late Stanley Z. Marder. Devoted mother of Daniel (Susan) Marder, Keren (Harris) Orzach and Naomi (Jeff) Baer; cherished grandmother of Jacob (Tamar) and Jesse (Shannon) Marder, Zachary Baer, Sarah, Kayla and Elana Orzach; and great-grandmother of Isaac and Ruben. Contributions may be made to the Jewish Social Service Agency. Arrangements entrusted to Torchinsky Hebrew Funeral Home.