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. Julius Caesar: Gaius Julius Caesar (Latin: CAIVS IVLIVS CAESAR, ] , born: 13 July 100 BC – 15 March 44 BC), usually called Julius Caesar, was a Roman politician and general who played a critical role in the events that led to the demise of the Roman Republic and the rise of the Roman Empire. Julius Caesar:  He is also known as a notable author of Latin prose.
i don't know