▁accepting ▁him ▁as ▁the ▁M orm a er ▁of ▁Earl ▁of ▁Mar ▁who ▁preced ed ▁his ▁son ▁M org g án . ▁ ▁References ▁ ▁Anderson , ▁Early ▁S ources , ▁Vol . ▁II , ▁p .   4 9 4 ▁in ▁n . 1 ▁of ▁ 4 9 3 ▁ ▁Or am , ▁" The ▁Ear ls ▁and ▁Ear ld om ▁of ▁Mar ", ▁p .   4 7 ▁ ▁Bibli ography ▁ ▁Anderson , ▁Alan ▁Or r , ▁Early ▁S ources ▁of ▁Scottish ▁History : ▁AD ▁ 5 0 0 - 1 2 8 6 , ▁ 2 ▁Vol s ▁( Ed inburgh , ▁ 1 9 2 2 ) ▁ ▁Richard ▁D . ▁Or am , ▁" The ▁Ear ls ▁and ▁Ear ld om ▁of ▁Mar , ▁c 1 1 5 0 - 1 3 0 0 ," ▁Steve ▁Board man ▁and ▁Al as da ir ▁Ross ▁( eds .) ▁The ▁Ex erc ise ▁of ▁Power ▁in ▁Med ieval ▁Scotland , ▁c . 1 2 0 0 - 1 5 0 0 , ▁( D ub lin / Port land , ▁ 2 0 0 3 ). ▁ ▁pp .   4 6 – 6 6 ▁ ▁Roberts , ▁John ▁L ., ▁Lost ▁Kingdom s : ▁C elt ic ▁Scotland ▁in ▁the ▁Middle ▁A ges , ▁( Ed inburgh , ▁ 1 9 9 7 ), ▁pp .   5 5 – 6 ▁ ▁Category : 1 1 4 0 s ▁death s ▁Category : Pe ople ▁from ▁Aber de