Nothing like that. So far Mano is just a normal human, albeit an albino one with violent tendencies :)
Well I said "so far human". Since up until now we saw nothing (I also mean that literally as I can't read the raws) hinting at him having mixed ancestry. But I like your theory and I think it's possible in the long run, so I guess we'll just have to wait and see ;)
Pls forgive any typos, writing on my phone
so-is Mano a damphir or what?