What does Patron mean in japan?

Question:

in the anime Ghost Hunt one episode John a 19 year old priest says "... maybe they have a patron together..." well the other people around him were like dot dot dot oh my and one of them said patron has a different meaning in japan on the subject of geishas... sooo what does it mean in japan?

Answer:

Patron in Japanese is an older guy who gives financial aid to a young girl, often in exchange for sexual relation.

I think there is an English word "suger daddy" for the same meaning.