Apparently in Roman religion, Juno was the chief goddess. She was the female counterpart of Jupiter and resembled the Greek Hera, with whom she is often confused. Juno represented all aspects of the life of women.
Below are other sites to check out for more information. The first web site below might help one to understand how Juno and Hera become intermingled. Good luck in your search.
Roman Goddess Juno, is also known as the Greek Goddess, Hera. A few sources state that Juno and Hera are both known as the queen of the gods and the goddess of marriage and is one of the childbirth goddesses. I've included some links below to help you out. Good luck!