|Easton's Bible Dictionary|
A Christian woman at Rome to whom Paul sent his salutations (Romans 16:15), supposed to be the wife of Philologus.
Int. Standard Bible Encyclopedia
joo'-li-a (Ioulia): The name of a Roman Christian to whom Paul sent greetings, the wife or sister of Philologus with whose name hers is coupled (Romans 16:15). The name points to member of the imperial household.
Julia (1 Occurrence)
Romans 16:15 Greet Philologus and Julia, Nereus and his sister, and Olympas, and all the saints who are with them. (WEB KJV WEY ASV BBE DBY WBS YLT NAS RSV NIV)