Who is XXX's dad?
Nikola Radonja
Nikola Radonja (Serbian: Никола Радоња) or Nikola Radonja Branković or Gerasim or Roman, (c. 1330-1399) was a 14th-century Serbian nobleman and chronicler, a member of the Branković dynasty as the eldest son of Branko Mladenović.
Branko Mladenović