American lawyer and jurist; born Jan. 23, 1854, in London; went to the United States with his parents in his infancy; educated at the New York public schools and the College of the City of New York, graduating in 1872. Thereafter he studied law at the Columbia College Law School until 1875, and from 1872 to 1877 was a teacher in Grammar School No. 59, New York. Then he commenced to practise law, which he did alone until 1894, when he entered into partnership with Daniel P. Hays. In May, 1901, he resumed separate practise, which he continued until he was elected judge of the Supreme Court of the State of New York Jan. 1, 1902.
Greenbaum is a member of the New York State Bar Association; the Society of Medical Jurisprudence; the Jewish Historical Society, etc. He was president of the Aguilar Free Library Association, and is first vice-president of the Educational Alliance, and trustee of the New York Public Library and of the Jewish Theological Seminary of America.