patron
Pronunciation: /ˈpeɪtr(ə)n/
noun
- 1a person who gives financial or other support to a person, organization, or cause: a celebrated patron of the arts
- a distinguished person who takes an honorary position in a charity: the Mental Health Foundation, of which Her Royal Highness is Patron
- 2a customer of a shop, restaurant, etc., especially a regular one: we surveyed the plushness of the hotel and its sleek, well-dressed patrons

Origin:
Middle English: from Old French, from Latin patronus 'protector of clients, defender', from pater, patr- 'father'