In your article about supermarket names, you state that Lidl is named after A. Lidl, a company with which Josef Schwarz partnered to set up what has become the current worldwide chain of supermarkets. This is wrong.
As the company expanded in the 1970's the intention was to rename the supermarkets Lidl but legal reasons prevented this originally. The supermarkets couldn't operate under the name of Schwarz because Schwarzmarkt means black market in German.
So instead of adopting the name Lidl from within its own company structure the owner at the time, Dieter Schwarz son of Josef, found someone called Ludwig Lidl and bought the rights to use his name for 1000 DM.
And as the saying goes, the rest is history.