Original sentence: There is some vague evidence, that his father was Sirputis, brother of Traidenis, Bardis, Liesis, and Svalkenis and his grandfather was Viršpulis, mentioned in chronicles
Edited sentence: There is some vague evidence, that his father was Sirputis (probably descendant of other Sirputis, brother of Traidenis, Bardis, Liesis, and Svalkenis) and his grandfather was Viršpulis, mentioned in chronicles