Medlands states:
http://fmg.ac/Projects/MedLands/MONTENEGRO.htm#_Toc156305668
Large parts of this chapter are based only on the falsification known as the Chronicle of the Priest of Duklja, discussed in the Introduction to the present document. Only information which is shown below as corroborated in Byzantine sources or later charters can be considered reliable. It is possible that all the early generations of this family are fictional.
So, is there documentation for the ancestry attached to him here on Geni? If not, it would be best to disconnect any unproven lineage that gives unlikely kinship pathways.