Title: Ragnall mac Gofraid
Content:  Ragnall mac Gofraid (died 1004/1005) was King of the Isles and likely a member of the Uí Ímair kindred. He was a son of Gofraid mac Arailt, King of the Isles. Ragnall and Gofraid flourished at a time when the Kingdom of the Isles seems to have suffered from Orcadian encroachment at the hands of Sigurðr Hlǫðvisson, Earl of Orkney. Gofraid died in 989. Although Ragnall is accorded the kingship upon his own death in 1004 or 1005, the succession after his father's death is uncertain. During his career, Ragnall may have contended with Gilli, an apparent Hebridean rival who was closely aligned with Sigurðr. Another possible opponent of Ragnall may 
Title: Ragnall mac Gofraid
Content:   Ragnall was a son of Gofraid mac Arailt, King of the Isles. Ragnall belonged to the Meic Arailt, a family named after his paternal grandfather, Aralt. The latter's identity is uncertain, although he may well have been a member of the Uí Ímair kindred. From at least 972 to 989 Gofraid actively campaigned in the Irish Sea region, after which the political cohesion of Kingdom of the Isles —perhaps shaken by Orcadian encroachment in the 980s —seems to have diminished. There is evidence to suggest that Sigurðr Hlǫðvisson, Earl of Orkney extended his authority from Orkney into the Isles in the late tenth- and early eleventh 
Title: Fingal mac Gofraid
Content:  h-ua Regnaill", whilst the Annals of Ulster calls him "Gofraigh mc. Amhlaim uel mc Raghnaill". Although the evidence regarding Gofraid ua Ragnaill could indicate that his father was named Amlaíb, who was in turn the son of a man named Ragnall, the latter annal-entry literally states that he was the "son of Amlaíb or son of Ragnall", potentially indicating confusion in regard to his parentage. In any event, the annal-entries suggest that Gofraid ua Ragnaill was closely related to Echmarcach mac Ragnaill, King of Dublin and the Isles. Gofraid ua Ragnaill, therefore, could have been the son of a brother of Echmarcach named either Amlaíb or Sitriuc, or else perhaps even a son of Echmarcach himself.
Title: Gofraid mac Arailt
Content:  Gofraid's son Ragnall died in Munster in 1005, and he too is called king of the Hebrides. Echmarcach mac Ragnaill may or may not have been Gofraid's grandson, as he is also contended to have been a grandchild or great-grandchild of Ivar of Waterford. The same is the case for Cacht ingen Ragnaill, queen of Donnchad mac Briain, often assumed to be Echmarcach's sister. The Banshenchas record that a daughter of one Gofraid named Máel Muire married Gilla Pátraic mac Donnchada, king of Osraige. If this is correct, Donnchad mac Gilla Pátraic, later King of Leinster, was this Gofraid's grandson, and all subsequent kings of Osraige and members of the FitzPatrick dynasty are their descendants. Although lacking a patronymic, scholars have identified him with Gofraid mac Arailt. Lagmann, whom William of Jumièges calls "king of Swedes", probably an error for "king of the Sudreys", the Norse name for the Hebrides, is believed to have been a son of Gofraid. Lagmann's son Amlaíb is said by the Cogadh Gáedhel re Gallaibh to have been killed at the Battle of Clontarf and his genealogy is given there linking Lagmann and Gofraid.
Title: Ragnall mac Gofraid
Content:  be evidence that she was a daughter of Ragnall, or a near relation of the like-named men who ruled Waterford. Ragnall may have also been the paternal grandfather of Gofraid mac Amlaíb meic Ragnaill, King of Dublin. The latter's apparent father, Amlaíb, could well have been the father of Sitriuc mac Amlaíb, a man whose fall in an attack on Mann with two members of the Uí Briain is recorded by the Annals of Ulster in 1073. Decades afterwards in 1087, the same source relates that two descendants of a certain Ragnall were slain in another invasion of Mann. Whilst Amlaíb may have been the father of these two as well, it is also possible that they were sons of Echmarcach or Gofraid mac Amlaíb meic Ragnaill.
Title: Ragnall Guthfrithson
Content:  Ragnall's father is identifiable as Gofraid, who was king of Dublin between 921 and 934, and also briefly ruled Northumbria in 927. In the annals Gofraid is identified by the use of "ua Ímair", meaning "grandson of Ímar", but never with a patronymic. As such, it is not possible to identify which of the three known sons of Ímar (Bárid, Sichfrith or Sitriuc) – if any – was the father of Gofraid. Ímar, possibly identical to Ivar the Boneless, was the founder of the Uí Ímair and was one of the earliest kings of Dublin in the mid-ninth century. Three other individuals are identifiable as sons of Gofraid. Albann was 
Title: Ragnall mac Gofraid
Content:  on the Continent, a fact which might be evidence that this man had been ejected from the Isles by Brian. An apparent son Lagmann was slain in battle against Brian's forces in 1014. The lack of a suitable native candidate to reign in the Isles may have led to the region falling under the royal authority of the Norwegian Hákon Eiríksson. The latter's death in 1029 or 1030 may have likewise contributed to the rise Echmarcach mac Ragnaill, King of Dublin and the Isles, a possible son of Ragnall. Other children of Ragnall could include Cacht ingen Ragnaill, and the father of Gofraid mac Amlaíb meic Ragnaill, King of Dublin.
Title: Ragnall mac Gofraid
Content:  was accorded the kingship of the Isles by the time of his death, and it is possible that he faced opposition from Sigurðr during his career. Njáls saga specifically states that the latter and his men overcame a king on Mann named Gofraid after which they plundered the Isles. Whilst this royal figure may well refer to Ragnall's father, another possibility is that source actually refers to Ragnall himself. Contemporary Orcadian expansion may be perceptible in the evidence of the land-assessment system of ouncelands in the Hebrides and along the western coast of Scotland. If Sigurðr's authority indeed stretched over the Isles in the last 
Title: Gofraid mac Amlaíb meic Ragnaill
Content:   Gofraid seems to have been a close kinsman of Echmarcach mac Ragnaill, King of Dublin and the Isles. The familial background of the latter is uncertain. He could have been a member of the Waterford dynasty descended from Ímar, King of Waterford, and thus a descendant of Ímar's son, Ragnall, or the latter's son, Ragnall. Alternately, Echmarcach could have been a member of the Meic Arailt dynasty, and a descendant of Ragnall mac Gofraid, King of the Isles. In the eleventh- and twelfth-centuries, four candidates to the high-kingship of Ireland managed to gain control of the Kingdom of Dublin, and appoint their intended heirs as its rulers. In effect, control of this Norse-Gaelic coastal kingdom, and 
Title: Gofraid ua Ímair
Content:  Corbridge in northern England. This battle was fought between Ragnall and Constantín son of Áed, the king of Scotland, and although it was indecisive it allowed Ragnall to establish himself as king at York. In the annals' account Gofraid is fully titled Gofraid ua Ímair (Gofraid, grandson of Ímar), making him brother or cousin of Ragnall and Sitric Cáech. Ragnall died in 921 with Sitric Cáech succeeding him as King of Northumbria. Gofraid is mentioned by the annals that same year as taking control of Dublin. One of his first acts as King of Dublin was to lead a raid 

Question: Who is the father of Ragnall mac Gofraid?
Answer: Gofraid mac Arailt.