Louison is strange to me as an American, but remembering that it's French and looking at it that way makes it more adorable. I would never use it though, for the same reason I like
Ninon and would never use it-- sounds terrible in American English! lol
Louison and
Valentine seem like a weird sibset to me too, and I don't really like
Valentine to begin with.
My PNL = http://www.behindthename.com/pnl/37275
Top: Henry & Lara (main) / Caspian & Briar (GP) / Leon & Georgiana (top25)
Bottom: Trajan & Jacoba (main) / Dinadan & Melpomene (GP) / Corvo & Ourania (top25)