Editing Yehuda Leib Schneerson (Son of the Tzemach Tzedek) (section)

== Establishment of Kopust Chassidus ==
On 3 Elul 1866, he left Lubavitch, and his chassidim settled him in Kopust, where he led as Rebbe. In his letter to the Maharash, he writes "I was forced to lead." Chassidic stories tell that he shouted "murderers!" at the chassidim who transported him to Kopust. The Maharil was the oldest son who agreed to serve as Rebbe, and had known the Alter Rebbe, so most chassidim flocked to him. However, a beis din established to determine the Tzemach Tzedek's successor ruled that the Maharash should fill his father's position.

On Simchas Torah 1867, he fell ill and passed away on 3 Cheshvan that year. He was buried in Kopust. The Maharash tried to unite the two courts, but his efforts were unsuccessful, and the Maharil's position was filled by his son, Reb Shlomo Zalman Schneerson (grandson of the Tzemach Tzedek), author of Magen Avos.