My great grandfather was a jew. But how does that make me " 1/8 Jewish"? Last time I checked I am a christian.
I mean its not like being white, or being english. It is something you BELIEVE in, it has nothing to do with your bioligy does it?
Like if one of your parents where a Christian, and the other wasn't religious. That wouldn't make you "half Christian" would it now? It all depends on what you believe in.
I am a Christian, 100%. And what my parents, grandparents and great-grandparents believe in does not make one difference.