No, but if his father is also an American, then he is American...see. A natural born American not matter where you are born, if both parents are Americans. That is the law...McCain wasn’t born in the USA either. The courts have ruled on this.
There is some question, if his father was a Kenyan, because the mother has not been living in the USA for 4 years after her 16th birthday...but, if Marshal were the father, it is all moot. Sorry.
unless this is all beinbg fabricated to cover up the actual truth