An haife shi a Litchfield, Connecticut, a ranar 14 ga Yuni, 1841. Ita ce ta bakwai daga cikin yara 13 da aka haife shi ga mai wa'azin Calvinist mai suna Lyman Beecher. Mahaifiyarta ita ce matarsa ta farko, Roxana (Foote), mace mai addini sosai wanda ya mutu lokacin da Stowe ke da shekaru biyar kawai. Mahaifin Roxana shi ne Janar Andrew Ward na War War War. 'Yan uwanta masu daraja sun hada da' yar'uwa, Catharine Beecher, wanda ya zama malamin ilimi da marubuci, da 'yan uwan da suka zama ministoci: ciki har da Henry Ward Beecher, wanda ya zama sanannen mai wa'azi da kuma abolitionist, Charles Beecher, da Edward Beecher.
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