Wenceslaus of Krosno

Wenceslaus of Krosno (Polish: Wacław krośnieński; c. 1391 – before 4 February 1431), a Duke of Żagań-Głogów during 1397–1412 (as co-ruler of his brother), during 1412–17 ruler over Głogów (with his brothers as co-rulers), since 1417 ruler over Krosno Odrzańskie, Świebodzin and Bytnica.

He was the fourth and youngest son of Henry VIII the Sparrow, Duke of Głogów by his wife Katharina, daughter of Duke Władysław of Opole.

After his father's early death in 1397, Wenceslaus and his older brothers succeeded him in his lands as co-rules, but remained under the care of their mother and settled their residence in Kożuchów, who, together with Zielona Góra, was her Oprawa wdowia. The official guardianship of the young princes and the regency of the Duchy were held by the Duke Rupert I of Legnica until 1401, when Wenceslaus's older brother Jan I attained his majority and assumed the government of the Duchy and the custody of his younger brothers by himself.

In 1412 was the formal division of their Duchy: Jan I retained Żagań and Wenceslaus, together with his brother Henry IX the Older and Henry X Rumpold obtained Głogów as co-rulers. In 1417 was made a new division, this time in the Duchy of Głogów: Henry IX the Older and Henry X Rumpold retained Głogów and Szprotawa, and Wenceslaus received the towns of Krosno Odrzańskie, Świebodzin and Bytnica.

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