Who is the Roman author of Letters Heroines?

There is no Roman author known for a work titled "Letters of Heroines". It's possible you are misremembering the title or author.

Perhaps you are thinking of:

* "Letters of a Roman Noblewoman" - This is a collection of letters, possibly written by a woman named Hilaria, but the authorship is disputed.

* "Heroines" by Plutarch, a Greek writer, who wrote biographies of famous women.

If you can provide more information about the book, I might be able to help you find the correct author.