When was the maternal uncle of Popiel I died who was the notable author of Latin prose?
Popiel I: Popiel I was a legendary ruler of Poland, member of the Popielids dynasty. Popiel I:  According to the legends reported by Wincenty Kadłubek in his "Chronica seu originale regum et principum Poloniae", he was the son of Leszko III and Julia, the sister of Julius Caesar.
i don't know