Why did Leonardo da Vinci's father not marry Leonardo's mother?
I believe they had a fight right before his proposal.
Well, when Leonardo was a young boy, his father had split up with his present girlfriend, (Caterina, Leonardo's mother) and he was left with his father. His father raised him throughout childhood and teenage years. Leonardo never went to a public school, his father raised him all by himself. I hope that was what you were asking!
Ser Piero da Vinci and Caterina. Leonardo da Vinci was born the illegitimate son of Piero da Vinci, and a peasant woman or middle eastern slave, Caterina, at http://wiki.answers.com/wiki/Vinci,_Italy in the region of http://wiki.answers.com/wiki/Florence, Italy. His mother married an employee of his father when Leonardo was a few months old. He was raised by his biological father.