I learned about Cottage Gardens from watching HGTV back in the early 2000's when they used to have a bunch of gardening shows.
The kings owned all the land and they had serfs working for them. The serfs lived in cottages and they had little fences around their cottages. Inside the fenced area they could grow whatever they wanted, so they grew vegetables, herbs, flowers, and medicinal plants. Back then you couldn't go to the pharmacy for a tummy ache.
I bet they had every square inch of that plot planted and I also bet they worked in it at the end of every day.
There are no straight lines in nature and therefore I don't have straight lines in my garden beds. The curves in a garden bed are like Trompe l'oeil. They fetch you along in the garden to see what lies ahead.