Same name?

Ashley

I’m 23 weeks and we’ve been pretty dead set on our name choice since around 14 weeks. My fiancé just got invited to his half brothers wedding so I was doing some fb investigating and looking at his family’s profiles (I haven’t met any of this family after 6 years, they’re not close at all. They live in another state and never really talk). While looking at his half sisters profile I saw that her son had the same name as the one we had picked out. Is that a definite deal breaker? I initially thought it was, but now I’m questioning it.