Nicholas: Very unsavoury family history, tbh. I'd also rule out Niklaus/Klaus/etc. We cold call the boy Copernicus Fitzwilliam (this is not a serious suggestion!!) and my family would prefer it.
Benedikt: My first "boyfriend". (We were proud to hold hands).
Stephan: Very nice name! But a really good friend of mine, from uni. We were in the same... union/student association (?). Very nice chap, can drink quite a lot and is good at shooting. But maybe not for our son (if it happens to be a boy. But girl names are already sorted, so.)
David: I love David. It was even on my list. But it is the name of my ex's husband (not my ex-husband. The husband of my ex!!). Uhm, and my ex is still my best friend (we were friends since elementary school..).
Sorry for the long comment. But you all suggested soo lovely names. And I wanted to explain why I couldn't...