Pandora is a Greek myth, and does not have a Roman counterpart. According to legend, Pandora was the first woman, and was created by Hephaestus on orders from Zeus. When she opened a jar given to her, after being given orders not to, she let all the evils out onto the world.
The myth of Pandora first appears in Hesoid's poem, "Theogeny." Prometheus was ordered by Zeus to create man, but instead he stole fire from the gods. In response, Zeus ordered Hephaestus to create Pandora. She was created with beauty and wealth, but also with deception. Zeus gave her to Epimethus as a bride, along with a jar that she was forbidden to open. Eventually, Pandora opened the jar out of curiosity, letting evil onto the world. Only hope remained in the jar when she closed it again.