How many genericized trademarks do you currently use (read the OP)

[eburacum45]

The use of the slang term Crapper may, or may nor, be influenced by the work of this gentleman.

But this factoid is also the subject of some debate; here, for instance.

Historical myths DEBUNKED!

I think most Dopers likely already know this, but… Yes, Thomas Crapper was a real plumber in Victorian London. No, he was not the inventor of the flush toilet as many lists of “fun facts” have claimed. At most, he held a few patents related to improvements to the toilet.