It's a bit how in British English vacuum cleaners are often called "Hoovers" after the brand. At one hand, yes, it is a family name, but the word has become so genericized that people even talk about "hoovering" their carpet and any connection to a name is lost.
And young children (and occasionally their parents jocularly imitating them) talk about "hooving" the carpet, because a "hoover" is obviously a machine for "hooving", right?
“Is the FBI in the habit of cleaning up after multiple murders?!!”
“Of course. Why do you think it’s run by a man called Hoover?”
This was a joke in the ‘80s Clue movie; albeit probably funnier to the English writer and the English actor saying the lines, as Hoover as a generecized trademark for vacuum cleaner is more popular there.
Even in the US, it's such a well-known brand that the joke still works well, despite Hoover not being so dominant as to have become the generic word for vacuum cleaner.
