▁D ier med us , ▁D ier met us , ▁D ier mit ius , ▁D ier mit ius ) ▁was ▁a ▁Catholic ▁ab bot ▁of ▁In is ▁Cl oth ran n ▁( In ch cl era un ), ▁L ough ▁Re e , ▁County ▁Long ford ▁and ▁of ▁F aug hal st own , ▁County ▁West me ath ▁and ▁a ▁famous ▁Irish ▁conf essor ▁of ▁the ▁late - six th ▁century . ▁ ▁He ▁was ▁of ▁pr inc ely ▁origin ▁as ▁he ▁was ▁sevent h ▁in ▁descent ▁from ▁N ath ▁Í , ▁King ▁of ▁Ireland , ▁who ▁died ▁ 4 2 8 ▁and ▁a ▁member ▁of ▁the ▁Hy - F ia ch rach ▁family ▁from ▁Con n acht . ▁His ▁father ▁was ▁L ug na , ▁son ▁of ▁L ug ad , ▁son ▁of ▁Fin bar r , ▁son ▁of ▁Fra ic , ▁son ▁of ▁C ath ch u on , ▁son ▁of ▁A eng us ▁B ec ch u oun , ▁son ▁of ▁N ath ▁Í ▁son ▁of ▁F ia ch ra e ▁son ▁of ▁E och a id ▁M ug med on . ▁His ▁mother ▁was ▁D ed iva ▁( also ▁called ▁Ed itu a ▁or ▁D edi ▁or ▁De idi ▁or ▁De ig he ▁or ▁De id iu ▁or ▁De aga ▁or ▁Med iva ), ▁daughter ▁of ▁T ren , ▁son ▁of ▁Dub h th ach ▁m oc cu ▁L ugh air , ▁who ▁was ▁a ▁Chief ▁O ll am ▁of ▁Ireland ▁and ▁royal ▁poet ▁of ▁King ▁L ó