Sigismund I of Lithuania

Sigismund Kęstutaitis

Grand Duke of Lithuania from 1432 to 1440

Sigismund Kęstutaitis was Grand Duke of Lithuania from 1432 to 1440. Sigismund was his baptismal name, while his pagan Lithuanian birth name is unknown. He was the son of Grand Duke Kęstutis and his wife Birutė.