I loooove this name. It could be because I'm from a younger generation and don't really recognize the character but I don't see what's so bad about the association. Also I'm hispanic and this name is more common with Spanish speakers (yet still a bit rare) so I'm perfectly okay with it. I think it would make for a better middle name though, in fact I named a character of mine
Leonora Elvira.
Some combos
Elvira UndineElvira IngridElvira AbeloneElvira DomingaElvira AgnessaElvira AnneliseElvira Onerva
Elvira Tzipora
Etta ElviraMireya ElviraZenaida ElviraDorinda ElviraRowena ElviraEdina ElviraIskra Elvira
Brothers to
ElviraEnzoAquilaVitusApolloUrielHiramIskander
AugustineArtemIdrisOnésimeValentinAmos