The Jewish Diaspora

Migration

German-Jewish settlement in Poland

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1300–1550 CERhineland (Ashkenaz — the ShUM cities) → Poland (Crown lands)

Why it happened

Crusade-era massacres, the Black Death of the 1340s, and expulsions pushed German Jews eastward,11 while Polish rulers—through the Statute of Kalisz (1264) and Casimir the Great's 1334 confirmation—offered charters, protection, and economic opportunity.23

The migration

Jewish traders reached Poland earlier, but sustained settlement grew as fled westward persecution and found a relative haven.2 Refugees from the German lands carried the German-and-Hebrew vernacular that became .2 Under Casimir III, who let Jews 'settle in Poland in great numbers' and protected them as 'people of the king,'3 communities are first attested at Lwów (1356), Sandomierz (1367) and Kazimierz beside Kraków (1386).3 Settlement spread north into Lithuania, granted broad privileges in 1388–1389,3 and Jews became the commercial backbone between nobles and peasants.3 By the sixteenth century the bulk of Ashkenazi Jewry had relocated to the Kingdom of Poland,1 and 'about three-quarters of the world's Jews lived in Poland by the middle of the 16th century.'4 Poland-Lithuania thereby became the main center of Ashkenazi Jewry until the Holocaust,1 its yeshivot famous by the early 1500s.2

Genetic corroboration

  • autosomalWhole-genome analysis of Jews 'confirms a recent bottleneck of merely ≈ 350 individuals' followed by rapid population growth.5 The study does not identify a Rhineland source, locate the bottleneck in Poland-Lithuania, or establish this settlement as the cause of expansion.

Sources

  1. BPolonsky, Antony. 2010. The Jews in Poland and Russia, Volume 1: 1350–1881. Littman Library of Jewish Civilization link
  2. CJewish Virtual Library. 2026. Poland Virtual Jewish History Tour. Jewish Virtual Library (AICE) link
  3. BWeinryb, Bernard D.. 1973. The Jews of Poland: A Social and Economic History of the Jewish Community in Poland from 1100 to 1800. Jewish Publication Society of America, Philadelphia link
  4. CWikipedia contributors. 2026. History of the Jews in Poland. Wikipedia link
  5. ACarmi S, Hui KY, Kochav E, et al.. 2014. Sequencing an Ashkenazi reference panel supports population-targeted personal genomics and illuminates Jewish and European origins. Nature Communications 5 4835. doi:10.1038/ncomms5835