Riagan mac Dúnlainge

Riagan mac Dúnlainge (sometimes spelled Riacán; patronymic sometimes spelled Dúngaile) was king of Osraige from 888 to 894 AD.[1]

Riagan mac Dúnlainge
King of Osraige
Reign888–894
PredecessorCerball mac Dúnlainge
SuccessorDiarmait mac Cerbaill
HouseDál Birn
FatherDúngal mac Fergaile

History

King Riagan was the son of king Dúngal mac Fergaile, of the Dál Birn lineage of Osraige. He peacefully succeeded to the throne of Osraige upon the death of his older brother Cerball mac Dúnlainge in 888.[2] He was also brother to the influential princess Land ingen Dúngaile. William Carrigan states that Riagan must have been aged upon ascending the throne, as his brother's famous reign lasted over forty years. The Annals of the Four Masters record him winning a victory over the Vikings of Waterford:[3]

FM888.6: A battle was gained by Riagan, son of Dunghal, over the foreigners of Port Lairge, Loch Carman, and Teach Moling, in which two hundred heads were left behind.

Whether king Riagan died or abdicated on account of age is not known; he was succeeded by his nephew Diarmait mac Cerbaill.

References
  1. William Carrigan. The History and Antiquities of the Diocese of Ossory, vol. I (1905). p 41. https://books.google.com/books?id=74QNAAAAYAAJ&printsec=frontcover&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=false
  2. Early Irish Regnal Succession: A Case Study; by Jim Reid. https://www.academia.edu/6401329/Early_Irish_Regnal_Succession_A_Case_Study
  3. FM888.6
Regnal titles
Preceded by
Cerball mac Dúnlainge		 King of Osraige
888-894		 Succeeded by
Diarmait mac Cerbaill
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