Donnchad Midi
Donnchad mac Domnaill (733 – 6 February 797), called Donnchad Midi, was High King of Ireland.
His father, Domnall Midi, had been the first Uí Néill High King from the south-central Clann Cholmáin based in modern County Westmeath and western County Meath, Ireland.
The reigns of Domnall and his successor, Niall Frossach of the Cenél nEógain, had been relatively peaceful, but Donnchad's rule saw a return to a more expansionist policy directed against Leinster, traditional target of the Uí Néill, and also, for the first time, the great southern kingdom of Munster.
Donnchad continued his father's support for the Columban churches, led by Iona.
In his many wars he used the churches, particularly the Columban monastery of Durrow, as a source of support.
He also ruthlessly attacked and plundered churches that supported his rivals among the Uí Néill and also those of Leinster and Munster.
Donnchad was remembered, not always fondly, as a warrior king.
He firmly established Clann Cholmáin's dominance among the Uí Néill kindreds of the midlands.
His descendants shared in the High Kingship until the time of Máel Sechnaill mac Domnaill, the last traditional High King of Ireland.
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Lorcán mac Cathail
Lorcán mac Cathail( blinded 864) was a King of Uisnech and Mide of the Clann Cholmáin.
Lorcán ruled in as King of Mide from 862–864.
His exact dynastic affiliations are unknown.
The death of a certain Cathal mac Conchobair is mentioned in the annals in 843.
If this was his father he may have been the grandson of the High King Conchobar mac Donnchada( died 833).
Upon the death of Máel Ruanaid mac Donnchada Midi of Mide in 843, a succession dispute broke out.
Whether the mention of Cathals's death in that year by the annals implies that Cathal died as part of this dispute or was the heir( he would have been senior in the clan at that time) and his death led to the dispute, is not mentioned.
Lorcán did succeed to the throne himself in 862 possibly as senior heir.
The new High King was Áed Findliath( died 877) of the northern Uí Néill kindred of the Cenél nEógain.
He however met much resistance from members of the southern Uí Néill.
Lorcán mac Cathail, allied himself with Amlaib, Ímar and Auisle( the leaders of the Norse) against Flann mac Conaing of Brega.
Flann was a former ally of Dublin, and still Áed's most important ally in the central part of Ireland.
Lorcán and his Norse allies plundered Brega in 863, and in 864 Conchobar mac Donnchada,( called the other king of Mide) presumably an ally of Flann against Lorcán, was captured and drowned near Clonard on Amlaibhs order.
Áed led an host to Míde, captured Lorcán and blinded him.
As a result, Lorcán had to abdicate.
It is not known when he died.
One of his sons, who is unnamed, is mentioned as being responsible for the killing of the heir of the high king Flann Sinna in 901.
In connection with this event the historian Charles- Edwards advances the theory that Lorcán was actually a member of the Luigne tribe as his son is called one of the kings of Luigne.
If so, then the theory is that Lorcán was appointed as the representative of Máel Sechnaill mac Maíl Ruanaid to administer Mide while he was high king.
However the" Annals of the Four Masters" do not refer to him as king of luigne but as the son of the King of Mide.
This theory could explain why Conchobar mac Donnchada was called the other king of Mide in the notice of his drowning by the Vikings in 864.
He may have been the rightful heir to Mide but his dynastic association with the Clann Cholmáin is also uncertain
Conchobar mac Donnchada
Conchobar mac Donnchada (or Conchobar mac Donnchado) was High-King of Ireland with opposition ("rí Érenn co fressabra") between 819 and 833.
Conchobar was the son of Donnchad Midi, high-king of Ireland (733–797); his mother was Fuirseach, a noblewoman of the Dál nAraidi.
Conchobar married Land, daughter of the former High-King Áed Oirdnide.
They had a son named Atrí, who became a cleric at Armagh, as well as three other sons, Cathal, Eochócan, and Cináed.
Conchobar appears as a historical figure for the first time when, in the year 802, the high-king Áed Oirdnide mac Néill of Cenél nÉogain, Conchobar's brother-in-law,(father-in-law) portioned out the lordship of Clann Cholmáin between Conchobar and Ailill.
Ailill was Conchobar's brother, but in the following year at Rathconnell, Conchobar killed his brother to take the whole lordship for himself.
Only five years later Conchobar, allied now with the king of Connaught, campaigned for the High-Kingship.
He met and defeated his former patron Áed Oirdnide, but it was not until Áed's death in 819 that Conchobar was recognized as High-King.
Even then Conchobar had to deal with the opposition of Áed's cousin, Murchad mac Máele Dúin.
The latter was able to form an alliance with one of Conchobar's own subject kindreds, the Síl nÁedo Sláine.
Conchobar soon became aware of the treachery, and in 822 he took revenge on this kindred in "an especially horrific slaughter".
In 823 Conchobar formed an alliance with Feidlimid mac Crimthainn, King of Munster (820–847).
However, Conchobar's attempts to subordinate Munster and its king proved intolerable to Feidlimid, and from 827 onwards Feidlimid mac Crimthainn was a source of opposition.
Conchobar died in unknown circumstances in 833, to which renewed Viking raids formed the backdrop.
He is buried at Clonard Abbey.
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Question: Who is the paternal grandfather of Conchobar Mac Donnchada?
Answer: Domnall Midi