I am a direct descendant but have not had any DNA testing done. I will see if anyone in my Russ line has. My Russ line crosses over a couple times so I can't recall which side has the Huldah Russ descendant.
I've spoken with a du Buysson from France and he says that he can prove that the du Buysson in question was married to a Frenchwoman when he was supposedly married to Huldah Russ, so I'm still questioning that