I think it's very nice. It doesn't sound dull when paired with very traditional names, and it grounds lighter or more modern names. It reminds me of
Theresa a bit but is less generic or recent seeming.
Louisa TopazLouisa LoreleiLouisa MarigoldLouisa MarjorieLouisa Galatea
Louisa MyrtleLouisa WillowLouisa ValentineLouisa ClementineLouisa MiriamLouisa FernLouisa HollyLouisa HazelLouisa JuneLouisa ChristobelLouisa WinifredLouisa Maeve