[quote=ActRaiserTheReturned]
Oh, why doesn't your character like mine? ;)
[/quote]

I figured that it was a parental thing. Both of these characters parents are of Celtic origin, and they way that both are depicted in various forms of media and iconography led me to believe that the two would likely be at odds, and I wanted to portray this through their children (or in this case, child.) Cernunnos is often depicted as a demon-like figure in druidistic thought, and Sirona is a goddess of healing. I just like the idea of the two gods being at odds, and this being carried down to their children. 

Of course, you could always just chalk it up to cultural differences. Rozenn is from Brittany, where tact is appreciated, and the fact that some boisterous American popped up and spontaneously started to talk about his genitalia would cause him to dislike Jakob. 

It's nothing against you as an RPer, I just thought it would be an interesting thing to happen.