Patron (noun)

1. A person who supports or gives financial or other assistance to a person, organization, or cause.
2. A regular customer or client of a particular business or establishment.
3. A person who is a regular user of a service or facility.
4. A person who is a sponsor or supporter of an artist, musician, or writer.

Origin:

From the latin patronus "protector, sponsor".

Examples:

1. He is a patron of the arts and supports many local artists.
2. She was a patron of the local library and always donated money for new books.
3. The restaurant had many regular patrons who came for the delicious food.
4. The museum was built with the help of several patrons who donated money.
5. He is a patron of the local football club and has been supporting them for many years.