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The Celtic kingdoms  243 
sea to Man and south-west Scotland and the battles for the Ulaid overkingship 
became immensely complicated by the fact of D
´
al Riata interests (and power) 
on the British mainland. Ainmere’s son Aed opportunely supported Aed
´
an 
mac Gabr
´
al Riata at the so-called ‘convention’ of Druim Cett against 
ain of D
´
the then Ulaid overking, probably B
´
an of the D
´
aet
´
al Fiatach;
28 
the outcome 
was an agreement that the Scottish D
´
al Riata should not owe tribute to the 
Ulaid overking. Battles for the Ulaid overkingship continued on Man in the 
570s and 580s, and in Ireland in the 620s, until 637 and Magh Roth; here Aed’s 
son Domnall roundly defeated the D
´
al Riata, led by Domnall Brecc, both on 
the Irish mainland, where he had allied with the D
´
al nAraide overking, and 
also at sea, where he had allied with the Cen
´
ogain. From that time D
´
el nE
´
al 
Riata interests focussed much more closely on Scotland, Ulaid overkingship 
conflicts  were  less  volatile,  and  the  U
´
ıN
´
eill  were  much  more  consistently 
successful. Domnall mac Aedo died peacefully in his bed (and – for his unusual 
success  –  was  the  first  to  be  called  ‘king  of  Ireland’ by  the  contemporary 
annalist).
29 
Though  the  U
´
ıN
´
eill  were more  consistently  successful,  in  other  words 
constantly  made  themselves  overkings  and  overoverkings,  until  the  end  of 
the century they continued to battle with each other for supremacy, that is, 
to establish overkingships. Although there continued to be conflicts within 
northern and within southern U
´
ıN
´
eill branches, the most prominent conflicts 
were between north and south and were increasingly focussed on the kingship 
of the symbolic site of Tara: he who held Tara might be said to be overking 
´ 
eill overkings. So, Diarmait mac Aedo Sl
´
of all U
´
ıN
´
aine of the south shared 
the Tara kingship with his brother Blathmac and defeated Conall of Cen
´
el 
Conaill in 654; his successor Finnechta, having killed his first cousin the king, 
ael D
´
el nE
´
defeated M
´
uin of Cen
´
ogain in 675; but Loingsech mac Oengusso of 
the northern Cen
´
el Conaill, the second Irish king to be called ‘king of Ireland’ 
bya contemporary annalist, took the Tara kingship without opposition and 
ruled till 703. 
30 
It is from the late seventh century that the first list of Tara 
kings survives, the Baile Chuind, and this in itself emphasises the now crucial 
significance of the Tara kingship in the politics of the north and midlands.
31 
During the seventh century the geographical range of the prominent U
´
ıN
´
eill 
overkings  had  increased  dramatically:  originally  playing  politics  within  the 
narrow confines of a few tuatha,by 700 they moved over half of Ireland. In the 
eighth they were to range even wider, as also to establish succession to the Tara 
kingship, which from 734 alternated between Cen
´
ogain of the northern 
el nE
´
28 
Traditionally in 575, but perhaps as late as 590,Meckler (1997). 
29 
Annals of Ulster s.a. 565, 574, 575, 577, 578, 580, 581, 582, 586, 626, 627, 629, 637, 642. 
30 
Annals of Ulster s.a. 654, 675, 703. 
31 
Murphy (1952); Byrne (1973), pp. 91, 104–5, 276–7;Irwin (1998).