American lawyer; born in Liedolsheim, grand duchy of Baden, Germany, Sept. 17, 1828. He was educated at the lyceum at Rastadt and the universities of Heidelberg and Freiburg. In 1854 he emigrated to the United States and settled in Chicago. There he found employment in the bank of R. K. Swift until 1858; but, having studied law, he was admitted to the bar in 1860, and gave special attention to probate and real-estate practise.
Rosenthal served as public administrator of Cook county, 1859-84; was director of the first Public Library Board, 1872-75; librarian of the Chicago Law Institute twenty-five years, and president of the same, 1878-80; secretary of the first State Board of Law-Examiners, 1897-99; member of the Chicago, State, and American Bar associations; and secretary of the first Fremont Club, 1856.
Rosenthal has been a director of the Chicago Relief and Aid Society, German Relief Society, United Hebrew Relief Association, Jewish Training School, and German Altenheim, and was one of the founders of Sinai congregation. He has also been a generous contributor to the Hebrew Union College library.
Married in 1856 to Jette Wolf, he has as issue two sons, James and Lessing, both of whom are lawyers in Chicago.
- Pritchard's Illinois of To-Day, p. 73.