14 Cheshvan - R' Avrohom Elimelech Perlow of Karlin HY"D (1942) ben R' Yisroel, killed al kiddush Hashem.
15 Cheshvan - Mattisyahu Kohen Godol (166 B.C.E.)
15 Cheshvan - R' Leib "Baal Yisurim" (1836), from the greatest talmidim of the Baal HaTanyain, Buried in Tzefas. Before he died he said that anyone that has a tzarah should come to daven at his kever and he will be helped.
15 Cheshvan - R' Avraham Yeshaya ben R' Shmaryahu Yosef Karelitz, the Chazon Ish (1953) Desended from the Maharal, Baal HaMaor and Baal HaPardes. He was one of the greatest and most respected Gedolim of his time.
16 Cheshvan - R' Amram Chasida, the Amora
16 Cheshvan - R' Chaim Pinto (1937), great Rov on Morocco
16 Cheshvan - R' Elazar Menachem Man ben R' Azriel Shach, Rosh Yeshiva of Ponovezh (2001)
17 Cheshvan - R' Reuven Katz, author of Degel Reuven, rosh yeshiva in Petach Tikva (1964)
17 Cheshvan - R' Menachem Mendel of Kosov (1825), Ahavas Sholom, son of R' Yaakov Koppel "Chosid"
17 Cheshvan - R' Binyomin Zev ben R' Nechemia Cheshin (1988) great mekubal involved in the Kiruv movement. He was also one of the Ziknei Breslov of his time. He descended from the talmidim of the Vilna Gaon. He has several well known sons.
18 Cheshvan - R' Yaakov Friedman of Husyatin (1952) ben R' Yitzchok of Buhosh. He was a son-in-law of R' Yisroel of Husyatin
18 Cheshvan - R' Rafael Baruch Toledano, author of Sephardic Kitzur Shulchan Aruch (1970)
18 Cheshvan - R' Nochum Partzovitz, Rosh Yeshivas Mir (1986)
19 Cheshvan - Hevel
19 Cheshvan - R' Pinchas Epstein, Rosh Av Beis Din of the Eida Hachareidis (1970)
19 Cheshvan - R' Avrohom Tzvi Hirsch Kamai, HY"D, rosh yeshiva and Rov of Mir (1941)
20 Cheshvan - R' Avrohom bar Yitzchak, Raavad II, author of Sefer Eshkol (1198)
20 Cheshvan - R' Sholom ben R' Yaakov Yosef HaLevi Rosenfeld of Kaminka (1851 )talmid of R' Shlom Kluher and R' Naftali of Ropshitz
20 Cheshvan - R' Moshe Nosson Nota ben R' Menachem Mendel Lemberger, the Makover Rov (1982) Talmid of R' Sholom Eliezer Halberstam of Ratzfort
20 Cheshvan - R' Mordechai Sharabi (1983), descendant of the Rashash, one of the greatest mekubalim of his time and rosh yeshiva Nahar Sholom, buried on Har Hamenuchos