Original sentence: Her name is Slavic, as are several of her children's names.The first source, a biography on her son, mentions her as the daughter of a "Triballian nobleman", which is interpreted as her being Serbian, modern scholars pointing to the Branković dynasty
Edited sentence: The first theory, a biography on her son, mentions her as the daughter of a "Triballian nobleman", which is interpreted as her being Serbian, modern scholars pointing to the Branković dynasty, but these are not reliable sources