The origin of the name - Cupavci - is from the Croatian word "cupavi" meaning hairy,fuzzy or furry, in reference to the appearance of the coconut shell.
A very similar confection is the Australian dessert "Lamington" , named after Lord Lamington, who served as Governor of Queensland Australia from 1896 to 1901.
I make money on some products and services that I talk about on this website through affiliate relationships with the merchants in question. I get a small commission on sales of those products. That in no way affects my opinion of those products and services.