W. was born in 1913 in Vilna, Polish Lithuania. His father was a women's tailor.

According to his brother-in-law M. Karpinovitsh, W. as a young student excelled with his beautiful voice. He used to participate in the Vilna amateur ensembles, directed by Masha Kramer, Moshe Papierin et al. In 1933 he was a co-founder of the avant-garde arts theatre "Maydim" in Vilna under the auspices of Aaron Bastomsky, then he became a member of the theatrical "Duka".

According to Yekhiel Burgin, W. became popular in Vilna in the years [considered=fad] the Second World War as theatre lovers, by way of a beautiful voice for singing. Special thanks(?) to him in the years 1928-33, when together they used to  perform, having various opportunities with musical-dramatic numbers. Aside from playwriting capabilities, he also had an inclination to direct and he used to [egb] [settings=eynshteln] the numbers, which they used to perform.

After his marriage to Devorah Karpinovitsh, he acted together with her, in various professional troupes. In 1937 he was the main actor in Jonas Turkow's Danzig "Kultur-bund-teater". In 1941 he was a member of the Bialystok Yiddish State Theatre.

He returned to Vilna close to the German invasion, and there he was killed during the first days of the German Occupation of Vilna.

In the book "The Destruction of Vilna", Katsherginski noted M. as such:

"Leyb Weiner -- young actor. Ponar. 1941."
 

Sh. E. from his brother-in-law M. Karpinovittsh and Yekhiel Burgin.

• Sh. Katsherginsky -- "The Destruction of Vilna', New York, 1947, p. 231.

• Jonas Turkow -- "Farloshene shtern", Buenos Aires, 1953, Vol. 1, p. 195.