It is widely believed by historians that Leonardo Fibonacci was never married. While little is known about his personal life, there is no record of a wife or children.
Mathematician Leonardo Fibonacci, known for the famous Fibonacci number sequence, was born in the late 1100s in Pisa, Italy, and he died in 1240 in the same city. While his mathematical work is relatively well documented, the details of his personal life are very sparse. Because there is no evidence of Fibonacci marrying or having children, it is assumed that he never took a wife or built a family during his lifetime.