Name Prefix:<NPFX> King
Took part with three of his brothers (Conall Guban, Enada
, and Cairbre) in the overthrow of Ulidian power and the co
nquest of north-western Ireland, capturing the great prehis
toric dry-stone stronghold at Ailech (whose keep can stil
l be seen surrounded by three remaining rings of ramparts
) ca.425; established his own kingdom in the peninsula stil
l called after him Innishowen (Innis Eoghain or "Eogan's Is
le") between Lough Swilly and Lough Foyle; was converted t
o Christianity by St. Patrick himself, who called him "th
e lion Eogan mac Neill," ca. 442. His descendant aknown a
s the Cenel Eoghain, became the principal branch of the Nor
thern Ui Neill.