According to some accounts, Mjovic Jovanka was the father of William Jovanka and grandfather of Tegan. He and his wife, Sneshna, were both Serbian and emigrated from Yugoslavia to Australia. (PROSE: Cold Fusion)

When Tegan was young, Mjovic would tell her endless stories about vampires, which she did not believe. (PROSE: Goth Opera) By 1981, he and his wife had moved back to Yugoslavia, but returned to Australia for their son's funeral that year. (PROSE: Divided Loyalties) According to another account, he had died by then. (PROSE: Goth Opera)

One account stated that Tegan's grandfather was Albert Jovanka. (AUDIO: The Kamelion Empire)