הרב שמחה זיסל זיו

Simcha Zissel Ziv Broida, also known as Simhah Zissel Ziv or the Alter of Kelm, was one of the foremost students of Yisrael Salanter and one of the early leaders of the Musar movement. He is best known as the founder and director of the Kelm Talmud Torah.