Shtul Mozus b. 6 April 1863 in Dieveniškės, Ashmyany District, Vilnius Governorate (Dieveniškės, Lithuania); in 1887–1892 he studied the Talmud in Vilnius (Vilnius), and in 1893 graduated from the higher Talmudic academy Kolel in Kaunas (Kaunas, Lithuania); on 4 October 1897 he passed the examination in Łomża (Poland) for the rank of state rabbi. Rabbi of Jieznas, Vilnius Governorate (Jieznas, Lithuania), from 1900, rabbi in Frauenburg (Saldus) from 1907, and rabbi in Bauska and Bruknas from 1924.