Does “Everidia” work as a sister for Sansa and [name]Astoria[/name]? [name]General[/name] thoughts on Everidia?
Potential nicknames would be [name]Eve[/name], [name]Evie[/name], [name]Ever[/name], or [name]Dia[/name].
I think it generally fits the style of your other daughters’ names. However, it does sound a little made-up to me. The nicknames are super cute though! 
My first reaction, to be totally honest, was “ick”. Next to the other names, it sort of fits and that kind of saves it. But I think you could do better, with an existing rare or even made-up name.
wolv: No worries. LOL. I know it’s a bit over the top. Any ideas instead of this name? I am always happy for suggestions.