Niall Mac Aedh

870 - 919  (49 years)

• Name	Niall Mac Aedh  [1, 2, 3]
  Birth	870  [1, 2]
  Gender	Male
  Death	15 Sep 919	, Dublin, Ireland   [1, 2, 3]
  Person ID	I6103	Ancestrees
  Last Modified	3 Mar 2026

  
  

  Father	Aedh Mac Niall   d. 879, Druim Inesclain, County Conaille, Ireland
  Relationship	natural
  Mother	Mael Mac Kenneth,   b. Abt 830
  Relationship	natural
  _MARRIED	N
  Family ID	F650	Group Sheet  |  Family Chart

  
  

  Family	Gormflaith Ingen Flann,   b. 870   d. 948 (Age 78 years)
  _MARRIED	N
  Children	1. Muircheartach Mac Niall,   b. 900   d. 1 Mar 942 (Age 42 years)  [Father: natural]  [Mother: natural]
  Family ID	F697	Group Sheet  |  Family Chart
  Last Modified	3 Mar 2026

  
  

• Notes

  Called Neil of the Black Knee; killed fighting the Vikings in the Battle of Dublin. The O'Neills were the chiefs of the Cenel Eoghain tribe; their ancestral lands were sometimes called Tir Eoghain, roughly equivalent to the modern County Tyron. The surname is derived from Ui Niall, meaning descendant of Niall. The Ui Niall were the great royal dynasty of Northern Ireland; they separated from their kinsmen, the Connachta, after the famous accomplishments of the legendary King Niall of the Nine Hostages. The surname, however, did not exist until after Niall Glundubh. Niall captured and drowned a murderer in 907 who had violated the sanctuary of Armagh. He campaigned repeatedly against the Danes and Vikings, but was mortally wounded in combat in DublinOwner of Drinking cup at DunveganNeil Black-knee Glundubh

  
  

• Sources

  [S1522] Ui Neill.GED. Date of Import: 21 Jan 2006 [S932] DNA Genealogy Projects, Lamont Family DNA Study (http://www.lamont-young.com/). [S135] Wikipedia, (Name: Wikipedia;), Wikipedia. https://en.wikipedia.org/wiki/Niall_Gl%C3%BAndub