Rabbi Moshe Isserles [Rema]
Rabbi Moshe Isserles (Rema), born in Krakow in 1530, was a leading posek and Torah scholar of his generation. His glosses on the Shulchan Aruch, known as "HaMappah," incorporated Ashkenazic customs, making it a comprehensive halachic code for all of Israel.
His name "Isserles" derives from his father's name, the son of Rabbi Isserl (Yisrael) [born in Krakow, Poland in the year 5290 (1530)].
He was born into a distinguished and wealthy family; his father and his maternal grandfather were community leaders.
His father-in-law and teacher was Rabbi Shalom Shachna of Lublin, head of the Lublin Yeshiva and foremost among the Sages of Israel in Poland. Rabbi Moshe married twice; the first time to his teacher's daughter, who passed away in her youth.
The second time, he married the daughter of Rabbi Simcha Bunem of Meisels.
Even from his early youth, at the young age of thirteen, he was recognized for his greatness and ordained to the rabbinate.
He served as the Chief Rabbi and a Dayan of the Beit Din of the Kazimierz community in Krakow and founded a yeshiva which he headed.
The Rema was considered the greatest of the poskim of his generation and among the greatest halachic authorities in Israel. He was a "source of many mouths" for European Jewry, and even distant communities turned to him. In his days, Poland became a great abode of Torah.
Parallel to Rabbi Yosef Caro, who wrote a commentary on the Arba'ah Turim, the Rema wrote his commentary, Derichei Moshe, on the Arba'ah Turim.
Thus wrote the Chida:
The Maggid, the angelic mentor of Maran Rabbi Yosef Caro, urged him to publish his work on the Arba'ah Turim lest someone else precede him!As soon as the Rema saw the work of Maran Rabbi Yosef Caro, "the Beit Yosef," he shortened his path and included in his work only the novel halachic rulings and laws that were not brought in the Beit Yosef, such as: the laws and customs of Ashkenazic Jews, and incorporated them into glosses. Thus, the Shulchan Aruch was completed by him to become the foremost halachic work for all of Israel. The Rema did not live long, passing away at approximately age forty on the 18th of Iyar, Lag BaOmer. Yet, in his short years, he managed to accomplish great and wondrous things and authored thirty-three books, the greatest of which are: "Derichei Moshe" and "HaMappah." The Rema composed commentaries on tractates and aggadot of the Talmud, wrote annotations to the Zohar and to Maimonides' Guide for the Perplexed. Among his books are also: "Torat Ha'Olah," a symbolic commentary, and "Machir Yayin" on Megillat Esther, which offers the Rabbi's philosophical interpretation of the laws of the Beit HaMikdash, as well as his responsa (Shu"t HaRema) on various halachic subjects. It is said that on his tombstone was written: He authored 33 books, passed away on Lag BaOmer in the year 5333 (1573), and 33 virtues and good qualities were recounted before his bier. He was buried in the Jewish cemetery in Krakow.