Sechnassach mac Blathmaic (died 671) followed his father Blathmac mac Áedo Sláine (died 665) and uncle Diarmait mac Áedo Sláine (died 665) as High King of Ireland and King of Brega. He belonged to the Síl nÁedo Sláine kindred of the southern Uí Néill, named for his grandfather Áed Sláine (died 604).
Sechnassach mac Blathmaic (died 671) followed his father Blathmac mac Áedo Sláine (died 665) and uncle Diarmait mac Áedo Sláine (died 665) as High King of Ireland and King of Brega. He belonged to the Síl nÁedo Sláine kindred of the southern Uí Néill, named for his grandfather Áed Sláine (died 604).
Sechnassach's father and uncle are said to have died in a great plague—the buide Chonaill—which struck Ireland from 664 or 665 onwards.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).