While I can see pronunciation issues with [name]Luella[/name], I prefer that spelling as [name]Louella[/name] looks quite a bit like you just combined two names. Also, I think the brand is farely well-known (which may be a problem in itself, if you do not want people to make that association).
[name]Luella[/name] is very pretty, though.
As I’m not sure what style of names you like, I’ll give you a taster of a few :
Classic ‘filler’ middle names (which are still lovely) :
[name]Luella[/name] [name]Jane[/name]
[name]Luella[/name] [name]Jean[/name]
[name]Luella[/name] [name]Marie[/name]
[name]Luella[/name] [name]Mae[/name]
[name]Luella[/name] [name]Claire[/name]
[name]Virtue[/name] names :
[name]Luella[/name] [name]Grace[/name] - very popular
[name]Luella[/name] [name]Verity[/name]
[name]Luella[/name] [name]Joy[/name]
Gemstone names :
[name]Luella[/name] [name]Pearl[/name]
[name]Luella[/name] [name]Ruby[/name]
[name]Flower[/name] names :
[name]Luella[/name] [name]Rose[/name] - very popular
[name]Luella[/name] [name]Violet[/name]
[name]Luella[/name] [name]Tulip[/name]
[name]Luella[/name] [name]Marigold[/name]
[name]Luella[/name] [name]Clover[/name]
[name]Luella[/name] Celandine
[name]Luella[/name] [name]Ianthe[/name] (yan-thee) - means violet in Greek
[name]Luella[/name] [name]Rosamund[/name]/[name]Rosette[/name]/[name]Rosalie[/name] etc.
[name]Luella[/name] [name]Primrose[/name]
[name]Luella[/name] [name]Daffodil[/name]
[name]Luella[/name] [name]Poppy[/name]
Classic names :
[name]Luella[/name] [name]Caroline[/name]
[name]Luella[/name] [name]Charlotte[/name]
[name]Luella[/name] [name]Petrova[/name]
[name]Luella[/name] [name]Beatrix[/name]/[name]Beatrice[/name]
Classic but unusual names :
[name]Luella[/name] [name]Daphne[/name]
Very unusual names :
[name]Luella[/name] [name]Venetia[/name]
[name]Luella[/name] [name]Cassandra[/name]/[name]Cassiopeia[/name]
[name]Luella[/name] [name]Genevra[/name]
[name]Luella[/name] [name]Cordelia[/name]
[name]Luella[/name] [name]Eugenie[/name]/[name]Eugenia[/name]
[name]Luella[/name] [name]Persephone[/name]
[name]Luella[/name] [name]Thisbe[/name]
Names with a slightly modern feel :
[name]Luella[/name] [name]Blythe[/name]
[name]Luella[/name] [name]Paige[/name]
Modern names :
[name]Luella[/name] [name]Piper[/name]
Names to honour a particular nationality :
[name]Luella[/name] [name]Niamh[/name]/[name]Neve[/name] (Irish)
[name]Luella[/name] [name]Caoimhe[/name] (kee-va) (Irish)
[name]Luella[/name] [name]Maeve[/name] (Welsh)
[name]Luella[/name] [name]Seren[/name] (sare-en) (Welsh)
- ine names :
[name]Luella[/name] [name]Clementine[/name]
[name]Luella[/name] [name]Josephine[/name]
[name]Luella[/name] [name]Seraphine[/name]
[name]Luella[/name] Celandine
[name]Luella[/name] [name]Delphine[/name].
Good luck!