The Rema - Rabbi Moshe Isserles (Krakow)
Remuh Cemetery, ul. Szeroka 40, Krakow
Rabbi Moshe ben Israel Isserles, known by the acronym Rema (c. 1530 - 1572), was the rabbi of Krakow and head of its yeshiva, and the foremost halakhic authority for Ashkenazi Jewry. His work HaMapah ("The Tablecloth") is a set of Ashkenazi glosses on Yosef Karo's Shulchan Aruch. Since 1578 every edition of the Shulchan Aruch has included HaMapah - and through that union it became the universally accepted code of Jewish law.
The Rema rests in the Remuh Cemetery in Kazimierz, right beside the Remuh Synagogue founded by his father with the consent of King Sigismund II Augustus. His is the only grave in the cemetery that was not destroyed during the Second World War. To this day Jews from all over the world come to his tombstone and leave kvitlach - small notes with requests.
Confirmed by Wikipedia: Moses Isserles, krakow.travel and Chabad.org. His birth year is given as c. 1530 (some sources: c. 1520).
Yahrzeit: Lag BaOmer (18 Iyar). Until WWII, thousands of pilgrims visited the grave on that day. The Remuh Cemetery lies in the heart of Kazimierz - easily reached on foot, beside the Remuh Synagogue.