Complex sentence: Following the conversion to Judaism of the Khazarian royalty and aristocracy, their descendants began to claim origins in Kozar, a son of Togarmah, mentioned in the Genesis (Chapter 10 verses 2 & 3) as a grandson of Japheth.
Split into simpler sentences: Following the conversion to Judaism of the Khazarian royalty and aristocracy, their descendants began to claim origins in Kozar, a son of Togarmah. Togarmah is mentioned in Genesis (Chapter 10 verses 2 & 3) as a grandson of Japheth.