Gormflaith ingen Murchada
Gormflaith ingen Murchada was born in Naas, County Kildare, Ireland, around 960. She was the daughter of Murchad mac Finn, King of Leinster, sister of his successor, Mael Mórdha mac Murchada, and widow of Olaf Cuaran, the Viking king of Dublin and York. The main source of her life history is the Cogadh Gaedhil re Gallaibh. She was also the mother of King Sigtrygg Silkbeard of Dublin. Gormflaith married Máel Sechnaill mac Domnaill after Olaf's death, but she is best known for being the third wife of Brian Ború, the High King of Ireland. She was the mother of Donnchad, who succeeded Brian as King of Munster. In 999, Brian defeated Mael Mordha and Sigtrygg 'Silkbeard' at the Battle of Glen Mama. To negotiate peace, Brian married one of his daughters to Sigtrygg and took Gormflaith as wife. According to Njál's saga, which refers to her as Kormloð: "she was endowed with great beauty... [but] was utterly wicked." She was later divorced by Brian, and she began engineering opposition to the High King. She prompted Sigtrygg into gathering support from Vikings outside Ireland, most notably Earl Sigurd of Orkney and Brodir of the Isle of Man.