Nina O'Brien is the Seventh Princess of the O'Brien Empire and wife of Wharton Baruch,
She is a beautiful looking young lady.
During Wharton's stay in the O'Brien Empire, the two of them got interested in each other and wanted to marry. However, being the princess of the Empire, that choice was not hers to make. After much struggling and ultimately by intervention of the Wargod himself, she was allowed to marry Wharton.
After the Baruch Duchy was founded, she and Wharton moved to its capital. After a few years, their son Cena was born.