Namor/Emma
I would argue that it is the fault of my father, for being killed before he could marry my mother and legitimize me. Or the fault of the shipwright, making a faulty product. Possibly the fault of my grandfather, for promising my birthright to me and taking it away, or the fault of the Monegasque laws of succession, preventing me from inheriting the throne.
In fact, I would argue that I am approximately as faultless as it is possible to be.