Precursors to the Shimabara Rebellion: Persecution and Brewing Unrest, 1627–1630

Timeline

1. 1627–1628Shimabara · KyushuAround 1627, Matsukura Shigemasa imposed strict land surveys across the Shimabara domain, sharply increasing annual rice taxes and miscellaneous levies; peasant burdens surged, and combined with poor weather and crop failures, local livelihoods worsened.
2. 1629–1630Amakusa Archipelago · NagasakiThe shogunate and domain authorities continuously hunted hidden Christians in the Amakusa-Shimabara region, applying impalement, water torture, and other cruelties; many believers were martyred, and religious persecution and political repression intensified local social tensions.
3. 1630Shimabara-Amakusa · KyushuBy 1630, famine, tax increases, and persecution had drawn Shimabara-Amakusa peasants, rōnin, and hidden monks into a network of resistance; though the large-scale uprising did not erupt until 1637, later historians regard 1627–1630 as the key gestation period of the Shimabara Rebellion.