What or who was a knocker-upper?

and the knocker upper sometimes had his or her own knocker upper, known as a "knocker uppers knocker upper" true fact!

knocked up means something different in the USA today lol

The slang version of "knocked up" reaches back to the 1500s, when "knock her" was a common euphemism for having sex with a woman. So both uses, English and American, are quite old, but vastly different from one another.

In UK, until mid 20th century, there were also sirens a desig ated period of time before factory shift started. Most workers lived within walking distance of the factory

But nowadays no need for a knocker upper you can wake up by yourself by the Alarm Clock

I’d much rather be knocked up in England than in the United States!! 😜

Moray, yeah same in Ireland , being pregnant 🤰