- Born: 1360 B.C., Ireland
- Marriage (1): Unknown
Descendents of Duncan I the Gracious, King of Scotland, report created 19 Mar 2001 from http://www.geocities.com/craigs_kahunas/report_duncan.htm states in its ancestry of Niall Mor Noighiallach, 126th Monarch of Ireland, that Deman is the father of Dian -- separate individuals.
O'Hart's "Irish Pedigrees" states that Dein was kept out of the Monarchy by his father's slayer, and his son. In his time gentlemen and noblemen first wore gold chains round their necks, as a sign of their birth.