If you mean Da Vinci he was never married and had no children.
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Leonardo da Pisa, also known as Fibonacci, was an Italian mathematician who introduced the Hindu-Arabic numeral system to the Western world. He is best known for his work on the Fibonacci sequence, a series of numbers in which each number is the sum of the two preceding ones. His book, Liber Abaci, played a significant role in the development of mathematics in Europe.