[name_f]Violet[/name_f] is gorgeous, and fits so well with your kiddos! I agree that [name_f]Violet[/name_f] is too familiar to worry about those associations anymore! [name_m]The[/name_m] one surname I that fits your description of your surname sounds fine with [name_f]Violet[/name_f] imo 
I’m minorly obsessed with [name_f]Violet[/name_f] nn [name_f]Lottie[/name_f], but I think [name_f]Vivi[/name_f] is super cute for her too. Violet’s been one of my favorites for probably close to 15 years now—she’s so very lovely!