R. Salomon Wolf Klein (1814–1867), was born in Bischheim near Strasbourg into a family of chiropodists, he began his secular studies at the age of 18 and, in a few years, he acquired an extensive knowledge which included Latin and Greek. He then graduated from the rabbinical seminary of Metz (1839), and served as rabbi successively at Bischeim, Durmenach, and Rixheim (Haut-Rhin). Klein distinguished himself by numerous publications and by his indefatigable struggle against every attempt at reform. He became the leader of French Orthodoxy, but was unsuccessful in his candidacy for the office of chief rabbi of Paris. In 1850 Klein was appointed chief rabbi of the consistory of the Haut-Rhin department at Colmar, and for a long time was also its president. Here he came under attack following a change in composition of the consistory through the accession of liberal elements. His main works are: Nouvelle grammaire hebrasque raisonnee et comparee (1846); Guide du traducteur du Pentateuque (2 vols. 1852–53); Le Judassme ou la Verite sur le Talmud (1859); Recueil de lettres pastorales et de discours d'inauguration (1863). He also published some pamphlets in Hebrew, among them Ma'aneh Rakh al Hazut Kashah (1846); Mi-Penei Koshet against Zacharias Frankel (1861).

תשובה על דבריו של רפאפורט בספרו "דברי שלום ואמת", 1861 PRAG, על הביקורת שנדפסה בכתב-העת "ישרון, לחדש טבת שנה זו תרכ"א" נגד ספר "דרכי המשנה" לר' זכריה פראנקעל.