He started it because it was a gift when he was born. And alot of things could've inspired him.
no
Because he enjoyed it.
1468
around the 1400s
Don't start in the first place.
you do not start it in the first place
In 1495.
About 1587.
The date is not known, about 1500.
Leonardo DA Vinci recorded his notes backwards so he could see them in the mirror.
Probably in 1483.
Leonardo di Caprio and Leonardo da Vinci are the most known in the world but there a lot if you search on the Internet.