German rabbi; born at Meseritz, Prussia, May 1, 1810; died at Hildesheim May 20, 1870.

Landsberg's teacher, Aaron Wolfsohn, rabbi of Wollstein, was elected to the rabbinate of Hildesheim in 1826, and Landsberg accompanied him and lived under his roof until Wolfsohn's death in 1830. Landsberg then went to Brunswick, where he continued his rabbinical studies while preparing for the university at the Brunswick gymnasium. He studied at the University of Berlin from 1834 to 1838. At Berlin he became closely connected with Leopold Zunz; with him he organized the Seminary for Jewish Teachers in 1840, in which institution he was an instructor until 1845. A lifelong friendship with Zunz was established, with whom he corresponded until his death. In 1837 he passed his state's examination as "Oberlehrer," and his certificate contains the then usual clause, that, being a Jew, he had no claim to a position at a higher school.

In 1835 Landsberg was engaged as teacher at the Nauensche Institute for the education of boys, and from 1839 to 1846 he was its director, in which position David Cassel was his successor. From 1838 to 1846 he preached regularly at the bet ha-midrash and at the synagogue of Commerzienrath Lieberman.In 1846 he was appointed "Landrabbiner" of Hildesheim, which position he filled until his death. Although himself very strict in the observance of the ceremonial law, he was of a progressive spirit. In the synagogue built during his administration (1849) an organ was introduced, a mixed choir established, some German prayers introduced, and the "piyyuṭim" nearly all abolished. Confirmations of boys and girls were held every year. His eldest son is Dr. Max Landsberg, since 1871 rabbi of the Congregation Berith Kodesh at Rochester, N. Y.; his second son is Geheimrath Professor Theodor Landsberg of the Technische Hochschule at Darmstadt (since 1880), a distinguished authority on architecture, railroad- and bridge-building, and editor of the "Handbuch für Ingenieurwissenschaften."

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