Max Leibowitz was born in Iași, Romania and in September 1905 he emigrated to the United States along with his wife Sarah. He had 3 children.
Leibowitz was an American klezmer violinist and was a contemporary of other Romanian-born klezmer bandleaders and recording artists in the New York City area that included Abe Schwartz, Joseph Moskowitz, Abe Katzman, and Milu Lemisch (in Philadelphia). He is listed as composer of some Yiddish songs recorded in the early twentieth century.
Full biography on 'Max Leibowitz', Wikipedia.
Max Leibowitz and Orchestra: 'Baym Rebbe's Sideh' (Classic klezmer)