I adore
Louise; I think it's a lovely name. Not too frilly or over-the-top or pretentious. I don't know any personally, but there are tow royal children born within the last four years with the name:
Louise Alice Elizabeth Mary of Great Britain and
Louise Sophie Mary of Belgium.
Middle names:
Louise MathildeLouise CatherineLouise AugustaLouise PrimroseLouise AgathaLouise RamonaLouise AmelieLouise Felicitee
Louise Adoracion (I couldn't resist!)
Louise ChristinaLouise OpheliaLouise Anaïs
I don't like
Lewis, but I do like
Louis (pronounced 'loo-EE').
Ludwig is a name that I absolutely love, but would only use in a second middle name slot because it's so horribly dated that it's not even retro-chic. But hey, if you like it as a first name, by all means, go for it!
The only namesakes I know of are
Ludwig van Beethoven and der Märchenkönig,
King Ludwig II von Bayern (you should read his bio at
http://en.wikipedia.org/wiki/Mad_King_Ludwig.
He was such the romanticist).
Middle names:
Ludwig AndersLudwig AndreaLudwig FriedrichLudwig JohnLudwig PhineasLudwig IchabodLudwig PhilipLudwig MichaelLudwig GregersLudwig Richard (
King Ludwig was a patron of
Richard Wagner)
Ludwig FelixLudwig CasperLudwig MatthiasLudwig Nikolaus