Leonardo of Pisa is best known as Fibonacci; various stories found in books and on the web claim that the name Fibonacci was invented by Edouard Lucas or Guillaume Libri in the 19th century, and that it means "son of Bonacci" (Leonardo's father was apparently called 
Guglielmo Bonaccio). Heinz 
[Lueneburg](http://mathforum.org/kb/message.jspa?messageID=1176612&tstart=0) found out that the name Fibonacci had been used already by John Leslie in 1820. 


Are there any **facts** known as to who, why and when invented the name Fibonacci?
Or wasn't it invented at all?



Fibonacci = Leonardo Pisano?
From [*The Fabulous Fibonacci Numbers*](http://books.google.co.uk/books?id=-O4ZAQAAIAAJ&q=The+Fabulous+Fibonacci+Numbers&dq=The+Fabulous+Fibonacci+Numbers&hl=en&ei=jETQTIS3LY2-4garhLmwBg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC8Q6AEwAA) by A.S. Posamentier and I. Lehmann (Prometheus Books, New York (2007), pp. 17-18):



> 
> Leonardo Pisano - or Leonardo of Pisa, Fibonacci - his name as recorded in history, is derived from the Latin "filius Bonacci," or a son of Bonacci, but it may have been more likely derived
>  from "de filius Bonacci," or family of Bonacci. He was born to Guglielmo (William) Bonacci and his wife in the port city of Pisa, Italy, around 1175, shortly after the start of construction of a famous bell tower, the Leaning Tower of Pisa.
> 
> 
> 


The authors also indicate in a footnote that



> 
> it is unclear who first used the name Fibonacci; however, it seems to be attributed to Giovanni Gabriello Grimaldi (1757-1837) at around 1790 or to Pietro Cossali (1748-1815).
> 
> 
> 


