On second thought the first word is probably plural not genitive (and wildly preposed). Thus it's like:

'High kings to contend for Tara'

-E



----- Original Message ----
From: Elliott Lash <[log in to unmask]>
To: [log in to unmask]
Sent: Tuesday, February 17, 2009 8:48:04 PM
Subject: [OLD-IRISH-L] Poem by Cináed  the Wise 3

I tried the next stanza. 

BB
airdrig Do cosnam temra 
cen tairbirt re slúag n-emna
ind rárbúi gargda i n-airbert iarmad arba Cormac
Coro-bris .iiii. catha cona forna fáta finda
i n-enlo cono na._aít croda crinda

Lec
n-airdric. rar Do chosnom temra 
cen tairbert re sluag n-emna
bui garga i-nairbert iarmad arba Cormac
Coro-bris .iiii. catha conna forsna flatha finda
i n-aenlo conona imchath chrodha chrinda.

The sense of this is elusive right now - as is the metrical form of it. I translate what I can:

To contend for the High-kingship of Tara 
without subduing the host of Emain
______ fierce in heroic-deed after which Cormac dies (???)
so that four battles broke ____ upon the ______ 
in one day _____ _____ bloody Crinna.

I took 'iarmad arba'  as  "iarmo/iarma" (adverbial 'afterwards) + -d- (infixed 3rd person pronoun activing as a relative particle in Middle Irish. This bit is really dodgy) + -arba 'dies' (in DIL, cross referenced with at-baill)

Otherwise, I'm sure I've made many mistakes.

-Elliott