It was there that Karadžić met Vuk Vrčević, an aspiring littérateur, born in Risan. From then on Vrčević became Karadžić's faithful and loyal collaborator who collected folk songs and tales and sent them to his address in Vienna for many years to come.[15][16] Another equally diligent collaborator of Vuk Karadžić was another namesake from Boka Kotorska the Priest Vuk Popović. Both Vrčević and Popović were steadily and unselfishly involved in the gathering of the ethnographic, folklore and lexical material for Karadžić.[17] Later, other collaborators joined Karadžić, including Milan Đ.