Jēkabpils / Jakobstadt
He served here as rabbi after 5550 (1790).
A responsum from him was printed in the responsa Gedulat Mordechai, section 4 (where he signs “Mordechai Shushan Emek”).
Di Geshikhte fun di Yidn in Letland, p. 120.
Latvia and Rabbis