Wladyslaw Odonic

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Wladyslaw (also named Wlodzislaw) Odonic (nicknamed Plwacz) (Polish: Wladyslaw (Wlodzislaw) Odonic (Plwacz)) (c.1190 - 5 June 1239) was a Duke of Kalisz during 1207-1217, Duke of Poznan during 1216-1217, in 1223 ruler over Ujscie, from 1225 ruler over Naklo, Duke of all Greater Poland during 1229-1234, and since 1234 until his death ruler over only the north and east of the Warta river (some historians believed that shortly before his death, he lost Ujscie and Naklo).

He was a son of Odon, Duke of Kalisz, by his wife Viacheslava, daughter of Yaroslav Vladimirovich "Osmomysl", Prince of Halych. Wladyslaw probably received his name after either his paternal uncle Wladyslaw III Spindleshanks or his ancestor Wladyslaw I Herman.

The nickname "Plwacz" (English: the Spitter) was already given to him in the 13th century chronicles. It's unknown if he was named in that way for a disease who affected his throat or because he had bad manners. Another nickname used in the contemporary sources was "Odonic", a corruption of his patronymic Odowic ("son of Odon"); here is also unknown why the sources persisted in the erroneus form instead of using the correct