Foundation for Medieval Genealogy; http://fmg.ac/; Medieval Lands @ Russia, Rurikid, Chapter 1

(Ref: Russia, Rurikid, Chapter 1) The author/originator was Charles Cawley.

• References (3)
  • Parent Source: Foundation for Medieval Genealogy; http://fmg.ac/; Medieval Lands
  • Individual: EUPHROSINE MSTISLAVNA
  • Individual: Leon Diogenes