John, Duke of Ścinawa

John (Polish: Jan Ścinawski; c. 1298 – by 19 May 1365) was a Duke of Żagań, Ścinawa, etc. during 1309–1317 (with his brothers as co-rulers), Duke of Poznań during 1312–1314 (with his brothers) and sole Duke of Ścinawa since.

He was the fourth son of Henry III (I), Duke of Głogów, by his wife Matilda, daughter of Albert I, Duke of Brunswick-Lüneburg.

At the time of his father's death, John was still a minor, and therefore he remained under the care of mother and his older brother Henry IV the Faithful.

On 29 February 1312 was made the first division of the Duchy, under which John, Henry IV and Przemko II received Żagań, Ścinawa and Poznań; also, they received the promise of inheritance over Głogów after the death of their mother Matilda, who held this land as her dower. The rest of the lands were taken by his other brothers Conrad I and Bolesław.

The period of joint rule of the princes faced several difficulties, the most importante of them was the loss of part of Greater Poland in favor of Władysław I the Elbow-high. At the same time they also lost part of the territories acquired by the father to the Dukes of Legnica.

In 1317, John received from his brother Henry IV the districts of Ścinawa, Góra and Lubin as his own independent Duchy.

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