Nickname help?

[renishas.livejournal.com]

I'm 25 weeks pregnant with our second boy. The first time around I had a short list of first names and a middle name sorted out. This time around I'm a little clueless. So I come to you wonderful name lovers. We've been referring to him as Baby Castiel, (Yes from Supernatural.) but it's not exactly a first name I think I'd actually use. However we have come around to the nickname of Cas. Other than Castiel and Cassidy (which sounds like a girl's name) what are other name possibilities that Cas could be the nickname?

Middle names for Isolde

[lipsty.livejournal.com]

What middle names do you think would go nicely with Isolde? I'm currently between Isolde Ann and Isolde Elizabeth, with Ann being a family name. I'm thinking that a classic, uncomplicated name would fit best, as Isolde is fairly unusual.

edit: we'll pronounce Isolde Iz-old rather than Iz-ol-duh. And before anyone mentions it, we're not worried about the "Isolde is old" jokes. People make jokes out of any name and that's definitely not the worst!