Conversation so far:
What was Leonardo da Vinci age
67 when he died.
How did Leonardo da Vinci die
Possibly of a stroke.
What happen in 1513 to Leonardo da Vinci
From September 1513 to 1516, Leonardo spent much of his time living in the Belvedere Courtyard in the Apostolic Palace, where Michelangelo and Raphael were both active.

Question: When was he buried
Self-contained rewrite: When was Leonardo da Vinci buried