There are even a few books of so-called trivia "facts" which also repeat the various tales of Napoleon’s ailurophobia. But was it true?

In a word, no. It seems that this misinformation was perpetrated decades after the Regency, when there actually was a Napoleon who was indeed terrified of cats. However, the Napoleon who suffered from ailurophobia was not the French Emperor, but his nephew, who became Napoleon III in the mid-nineteenth century.

https://regencyredingote.wordpress.com/2014/05/16/fact-or-fiction-boneys-feline-phobia/