Jacob Joshua Falk

On his mother's side he was a grandson of Rabbi Yehoshua Heschel b. Yosef of Cracow, the author of Maginne Shelomoh.

In 1717 he replaced Rabbi Tzvi Ashkenazi in the chief rabbinate of Lemberg; and thence he was called to Berlin in 1731.

[3] Having displeased Veitel-Heine Ephraim, one of the most influential leaders of the community, by rendering a judgment against him, he was compelled at the expiration of his term of office (1734) to resign.

Soon afterward, the quarrel between Rabbis Yaakov Emden and Yonatan Eybeschütz broke out.

He was recalled to Frankfurt; but his enemies prevented him from preaching in the synagogue, and he left the city a second time.