In French 'Patron" is the owner or boss (generally in any workplace, but said of a restaurant , bar, cafe, etc).
In English it is copy/paste: "An example of a patron is a person who goes to eat at the same restaurant every week. An example of a patron is a wealthy lady who gives a lot of money to a small local art gallery. One who protects or supports; a defender. An influential, wealthy person who supported an artist, craftsman, a scholar or a noble."
interesting to see how Latin went from European common speech, but in English to either a more sophisticated style of speech or, in this case, a more sophisticated/leisure sector of society.