It turns out that she is actually his aunt, sister of Dr. Liesl Obrecht, Making Dr. O Nathan’s mother. The question of Nathan’s paternity came up along with all these new discoveries, including Nina now his cousin, not his sister. Dr. Obrecht told Nathan that Victor Cassadine is his father, but we all know that’s not the truth. Dr. O even mentioned that his real father, who has not yet been named, is far worse a man than Victor. Who could be so bad that even Dr. Obrecht doesn’t want to admit she fathered his child? GH rumors have speculated everyone from Cesar Faison to Jerry Jacks. We aren’t exactly sure but General Hospital spoilers indicate that Nina has some information regarding Nathan’s biological dad. If Nina does know the truth, it’s highly likely she will use it to her advantage, to hang over Dr. O’s head.
Do you know who Nathan’s father could be? If you have a guess, leave it in the comments below.