Person

Leszek the Black

c. 1241–1288 · 13th century · Also known as Leszek II the Black

Leszek the Black was a Piast duke who received Sieradz on the division of his father Casimir I's lands in 1267. In 1279 he inherited Kraków and Sandomierz and became High Duke of Poland. He fought off Lithuanian and Mongol raids and a rebellion of nobles, but died childless in 1288, prolonging the fragmentation of Poland.

Leszek the Black
Image: The original uploader was Zuber at Polish Wikipedia. · Public domain · Wikimedia Commons

Mentioned in 3 state histories

Duchy of SandomierzDuchy of KuyaviaDuchy of Sieradz

See also

Cite this entry
APA
The Epoch Institute. (2026). Leszek the Black. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/leszek-the-black
MLA
“Leszek the Black.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/leszek-the-black. Accessed .
Chicago
The Epoch Institute. “Leszek the Black.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/leszek-the-black.
Harvard
The Epoch Institute (2026) ‘Leszek the Black’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/leszek-the-black (Accessed: ).

Last reviewed October 2026Random entry ↻