Blathmin Ní Briain

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Blathmin Ua Briain
Queen consort of Norway
Reign 1103
Spouse Sigurd I of Norway
Father Muircheartach Ua Briain

Blathmin Ní Briain, also called Blathmin Ua Briain or Blathmin O'Brien, (floruit 1103), was an Irish princess and a Norwegian Queen consort, the first spouse of King Sigurd I of Norway.

A marriage alliance was negotiated between Magnus and Muircheartach Ua Briain, the leading king in Ireland at the time and ruler of Dublin. Sigurd was to marry Muirchertach's daughter, Blathmin. However, when Magnus was killed in Ulaid in 1103, the 14-year-old Sigurd returned to Norway, leaving his child-bride behind, and became king together with his brothers Øystein and Olav.


  • Alf Henrikson: Dansk historia (Danish history) (1989) (Swedish)
  • Sven Rosborn: När hände vad i Nordens historia (When did what happen in Nordic history) (1997) (Swedish)
Preceded by
Ingebjørg Guttormsdatter
Queen Consort of Norway
Succeeded by