Waiter etymology

There is a misconception on the origin of the word waiter as in someone who serves customers at their tables in a restaurant. It is assumed it has to be related to waiting for customers to make up their mind or something similar where you wait for certain time at the restaurant, but this isn't true.
In northern Europe during the middle age young people were expected to spend the first 7 to 15 years of their working lives in the service of a higher ranking person. (This would also cause them to marry only once they returned from service, this caused people to marry and have children around 30). Young nobles would have to spend this time as servants of higher nobles before receiving titles and property from their parents. Because they were waiting for inheritance, they were called waiters. Because of this, to this day high class servants are called waiters.