The Chief Rabbi of Amsterdam: A Jewish Convert
…statute. Sources: For biographical information see: Shmuel Yosef Fuenn, Kenesset Yisrael (Warsaw, 1886), entry R. (Ahron Moshe) Yitzhak b”r Avraham Graanboom; A. Ya’ari, “R’ Yitzhak ben Avraham haGer” in Mizrach…