Reb Alter Tepliker ZY"A HY"D, his real name was Reb Moshe Yehoshua Bezhilianski. Wrote ten sforim, including Hishtapchus Hanefesh, Meshivas Nefesh, Sichas Hanefesh, Ohr Zoreiach Hagada and Mei Hanachal (on Likutei Mohoran). He was murdered during the Cossak uprising in 1919 while seated next to a Sefer Torah.
R' Shmuel ben R' Yeshaya Halevi Horowitz ZY"A, first became interested in Breslov after reading Reb Alter Tepliker's Hishtapchus Hanefesh (whose yahrzeit is also today). Born in Eretz Yisrael. Went to Uman for Rosh Hashana for three years and spent three months in a Russian jail after being caught.