It's contents have been put together based on information supplied by members of the Amdur family 'olumi'.
The Russian law mandating the adoption of fixed surnames was enacted in 1809.
Prior to that time, Jews had just secular (Yiddish) and sacred (Hebrew) names.
* Another large group of Amdurs originally were named Amdursky.
They emigrated to the United States, possibly from Bialystok, at the end of the 19th century and settled in Pittsburgh. Results from the Amdur name DNA project indicates that the Pittsburgh clan are totally separate from most of the other branches of Amdur name bearing families * A third group descends from a husband and wife who lived in Mogilev in contemporary Belarus and who emigrated to Palestine in the first quarter of the 19th century.
These records were acquired for us over many years either from archivists in Kaunas (formerly Kovno) or Vilnius (formerly Vilna), the Braslav historical museum and by a number of local Jewish researchers hired by us for that purpose.