Casimir I of Opole

Casimir I of Opole (c. 1178–1230), only son of Mieszko IV Tanglefoot, ruled Opole and Racibórz from his father's death in 1211. He joined the junior Piast coalition, and in 1215 granted wide privileges to the Church. He later drew close to his cousin Henry I the Bearded, supporting his 1225 expedition against Kraków.

Casimir moved his residence to Opole and promoted German settlement under town law, chartering several towns including Leśnica in 1217. He died in May 1230.