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We know that his father was Guglielmo Bonaccio. Leonardo of Pisa, who is generally called Fibonacci today, is not known to have had a family.
Fibonacci had a mother called alessandra and a father called Guilielmo
It was discovered by Leonardo Fibonacci in Bogia when he travelled around with his father.
Fibonacci, b 1170, published his book in 1202. He decided the Arabic method of arithmetic was much superior to the Roman one. And he was right!