Robert Buchman Russia –> MN –> NY
I am researching a Robert Buchman, Jewish, born in Russia, immigration date 1892, married to Sarah Zalk in 1898. They settled in Duluth MN, moving to NYC in 1919. Their children were Moses Robert (pediatrician, Scarsdale NY), Sidney Robert (famous screenwriter), Marian Lamm (husband Herbert, professor of philosophy at University of Chicago), and Harold (screenwriter).
Does anyone have information on Robert Buchman's ancestry or siblings?