sentences:  This source is mirrored by several other Irish annals including the fifteenth - to sixteenth-century "Annals of Connacht", the seventeenth-century "Annals of the Four Masters", the fifteenth- to sixteenth-century "Annals of Ulster", and the seventeenth-century "Annals of Clonmacnoise".The precise identities of these men are unknown for certain, although they could well have been the heads of Clann Ruaidhrí and Clann Domhnaill.Whilst the slain member of Clann Ruaidhrí seems to have been Ruaidhrí, the identity of the Clann Domhnaill dynast is much less certain.