Person

Casimir I of Opole

c. 1178–1230 · 13th century · Also known as Kazimierz I of Opole

Casimir I of Opole (c. 1178–1230) was a Piast duke of Opole and Racibórz in Upper Silesia from 1211, a son of Mieszko IV Tanglefoot. He encouraged settlement under German law, founding towns and granting them charters, and moved his residence to Opole, where he built a new castle. His sons Mieszko II the Fat and Władysław succeeded him.

Casimir I of Opole
Image: Anonymous plate · Public domain · Wikimedia Commons

Mentioned in 1 state history

Duchy of Opole and Racibórz

See also

Cite this entry
APA
The Epoch Institute. (2026). Casimir I of Opole. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/casimir-i-of-opole
MLA
“Casimir I of Opole.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/casimir-i-of-opole. Accessed .
Chicago
The Epoch Institute. “Casimir I of Opole.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/casimir-i-of-opole.
Harvard
The Epoch Institute (2026) ‘Casimir I of Opole’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/casimir-i-of-opole (Accessed: ).

Last reviewed October 2026Random entry ↻