Alexander of Masovia

Alexander of Masovia
Alexander's tomb effigy in St. Stephen's Cathedral, Vienna
Prince-Bishop of Trento
Reign1424–1444
PredecessorHenry IV Flechtel
SuccessorBenedict of Trento
Born1400 (1400)
Died2 June 1444(1444-06-02) (aged 43–44)
Vienna
Burial
HousePiast
FatherSiemowit IV, Duke of Masovia
MotherAlexandra of Lithuania
ReligionCatholic

Alexander of Masovia (Polish: Aleksander mazowiecki; 1400 - 2 June 1444) was a Polish prince member of the House of Piast from the Masovian branch. He was Bishop of Trento since 1425, titular Patriarch of Aquileia since 1439, Cardinal nominated by Antipope Felix V as titular of the diocese of St. Lawrence at Damascus (San Lorenzo in Damaso) since 1440, titular Bishop of Chur since 1442 and rector at St. Stephen's Cathedral, Vienna since 1442, a diplomat.

He was the second son of Siemowit IV, Duke of Masovia and Alexandra of Lithuania, daughter of Algirdas.