"THE JEW": Why 1613??? (2)

Who was Michelangelo Buonarroti the Younger?

Let me warn you... This is a trick question. 

Cristofano Allori,  
Portrait of Michelangelo the Younger
Florence, Casa Buonarroti

"THE JEW": Why 1613??? (1)

Finito addì 21 di settembre 1613 = Finished on 21 September 1613

FACT: On 21 September 1613, Michelangelo Buonarroti the Younger signed off on his draft of L'Ebreo / The Jew.