Paragon of virtue

Anyone know the origin of the phrase: "... Paragon of virtue"?

Well, given the meaning of the word "paragon" ("A person of outstanding merit; a person who serves as a model of some quality") you can only be a paragon of something morally good. A paragon of courage, of grace, of learning. of modesty, etc, etc. - or just of virtue in general. (VSD)