A street in Sofia, Bulgaria, is named after Jurij Venelin, a Rusyn who was the first to prove that the Bulgarians were in fact Slavs.
Venelin was also recently featured in the Journal of Slovene Studies in Raymond H. Miller's paper "Venelin and the Slovenes." Venelin was also the first to call the Slovenes "Slovenes." Previously, they were known by local ethnonyms like Carinthians (Korosci) and Carniolans (Kranjci).
Here's a blog entry from the France Preseren Society for the Promotion of Contacts between Slovenia and Russia about the role of Venelin in Slovene history.