Honestly, I've never heard of Danika, but Danica is definitely Serbian. Also Iva and Mila (Mila can be a name by itself, meaning "favoured" from the Slavic "mil" - favour) are popular in Bulgaria and Serbia. Lala (Lalka) is used in Bulgaria, although it's kinda old-fashioned. So is Neva, but the common assumption in Bulgaria is that it comes from the name of the Russian river Neva. Lorelei, I believe, definitely belongs to the mythology section. And one question - why is Hamlet not in the Lit-section?