Máel Mórda mac Murchada was King of Leinster.

Son of Murchad mac Finn and brother of Gormflaith

Gormflaith

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...

, he belonged to the Uí Fáeláin sept

Sept (social)

A sept is an English word for a division of a family, especially a division of a clan. The word might have its origin from Latin saeptum "enclosure, fold", or it can be an alteration of sect.The term is found in both Ireland and Scotland...

 of the Uí Dúnlainge

Uí Dúnlainge

The Uí Dúnlainge, from the Old Irish "grandsons of Dúnlaing", were an Irish dynasty of Leinster kings who traced their descent from Dúnlaing mac Énda Niada. He was said to be a cousin of Énnae Cennsalach, eponymous ancestor of the rival Uí Chennselaig....

, whose lands lay around Naas

Naas

Naas is the county town of County Kildare in Ireland. With a population of just over twenty thousand, it is also the largest town in the county. Naas is a major commuter suburb, with many people residing there and working in Dublin...

 on the middle reaches of the River Liffey

River Liffey

The Liffey is a river in Ireland, which flows through the centre of Dublin. Its major tributaries include the River Dodder, the River Poddle and the River Camac. The river supplies much of Dublin's water, and a range of recreational opportunities.-Name:The river was previously named An Ruirthech,...

, in modern County Kildare

County Kildare

County Kildare is a county in Ireland. It is part of the Mid-East Region and is also located in the province of Leinster. It is named after the town of Kildare. Kildare County Council is the local authority for the county...

.

Máel Mórda is best known as the enemy of Brian Bóruma; both men died in the bloody battle of Clontarf

Battle of Clontarf

The Battle of Clontarf took place on 23 April 1014 between the forces of Brian Boru and the forces led by the King of Leinster, Máel Mórda mac Murchada: composed mainly of his own men, Viking mercenaries from Dublin and the Orkney Islands led by his cousin Sigtrygg, as well as the one rebellious...

, fought on Good Friday

Good Friday

Good Friday , is a religious holiday observed primarily by Christians commemorating the crucifixion of Jesus Christ and his death at Calvary. The holiday is observed during Holy Week as part of the Paschal Triduum on the Friday preceding Easter Sunday, and may coincide with the Jewish observance of...

in 1014. Máel Mórda's son Bran was king of Leinster from 1016 until he was deposed in 1018. Thereafter, perhaps as a result of the heavy losses at Clontarf, the kingship of the Uí Dúnlainge was held by the Uí Muiredaig sept.