ict s ▁under ▁Ó eng us ▁mac ▁Fer g usa . ▁The ▁name ▁of ▁his ▁successor ▁is ▁unknown , ▁and ▁the ▁next ▁king ▁to ▁appear ▁in ▁the ▁record ▁is ▁Á ed ▁Find ▁of ▁the ▁C en él ▁n G ab rá in , ▁some ▁three ▁dec ades ▁after ▁E ó gan ' s ▁time . ▁ ▁References ▁ ▁Anderson , ▁Alan ▁Or r , ▁Early ▁S ources ▁of ▁Scottish ▁History ▁A . D ▁ 5 0 0 – 1 2 8 6 , ▁volume ▁ 1 . ▁Re print ed ▁with ▁corre ctions . ▁Paul ▁Wat kins , ▁St am ford , ▁ 1 9 9 0 . ▁▁ ▁E og an ▁mac ▁Mu ire da ig ▁E og an ▁mac ▁Mu ire da ig ▁Category : 8 th - century ▁Irish ▁monarch s ▁Category : 8 th - century ▁Scottish ▁monarch s ▁Category : Year ▁of ▁birth ▁unknown <0x0A> </s> ▁In ▁ 1 8 4 7 ▁John ▁Pay ne ▁Col lier ▁( 1 7 8 9 – 1 8 8 3 ) ▁printed ▁A ▁Book ▁of ▁Ro x burg he ▁Ball ads . ▁It ▁consisted ▁of ▁ 1 , 3 4 1 ▁broad side ▁ball ads ▁from ▁the ▁sevent e enth ▁century , ▁mostly ▁English , ▁originally ▁collected ▁by ▁Robert ▁Har ley , ▁ 1 st ▁Earl ▁of ▁Oxford ▁and ▁Mort imer ▁( 1 6 6 1 – 1 7 2 4 ), ▁later ▁collected ▁by ▁John ▁Ker , ▁ 3 rd ▁Duke ▁of ▁Ro x burg he . ▁▁ ▁Col lier