German rabbi; flourished in the first half of the eighteenth century, officiating as rabbi in various German towns during a period of fifty-five years. He was the author of "Or Ne'elam," a collection of fifty-eight responsa relating to subjects he had discussed with Baruch Rapoport, Jonathan Eybeschütz, and others; and "Ur Lo be-Ẓiyyon," novellæ on Berakot and Halakot Ḳeṭannot. Both works were published after his death by his son, Judah Löb Etthausen (Carlsruhe, 1765).