Blácaire mac Gofraid

Blácaire mac Gofraid (Old Norse: Blákári Guðrøðsson [ˈblɑːˌkɑːre ˈɡuðˌrøðsˌson]; died 948) was a Viking[nb 1] leader who ruled Dublin in the 10th century.

Amlaíb allied with Congalach Cnogba, overking of Brega and the Southern Uí Néill, one of those Irish kings who led the attack on Dublin in 944, and was possibly subject to him.

With his rival dead, Amlaíb left for England to regain Northumbria and his brother Gofraid mac Sitriuc was made king in Dublin.

[2] According to Downham, "apart from these additions [of saga fragments], Irish chronicles are considered by scholars to be largely accurate records, albeit partisan in their presentation of events".

[9] That same year Lorcán mac Fáelán, overking of Leinster, led an attack on the Vikings at Dublin, and although he won a victory he was killed in the battle.

In 944 Lorcán's successor Bran Fionn mac Máelmórda, allied with Congalach Cnogba, overking of Brega and the Southern Uí Néill, and made a follow-up attack on Dublin.

[6] The year after the sacking Blácaire was expelled from Dublin and he was replaced as ruler there by his cousin Amlaíb Cuarán, perhaps as a consequence of his failure to protect the city.