▁despite ▁on going ▁controvers y ▁and ▁disapp ro val ▁of ▁much ▁of ▁the ▁family . ▁In ▁Series ▁ 9 , ▁M imi ▁forces ▁Billy ▁to ▁have ▁an ▁open ▁relationship ▁because ▁she ▁is ▁wor ried ▁she ▁is ▁to ▁old ▁for ▁him . ▁It ▁is ▁also ▁imp lied ▁she ▁knew ▁her ▁son ▁M icky ▁was ▁gay ▁all ▁along , ▁after ▁she ▁encourag es ▁him ▁to ▁leave ▁the ▁estate ▁with ▁a ▁baby ▁he ▁has ▁saved , ▁which ▁he ▁does . ▁ ▁Jam ie ▁Mag u ire ▁ ▁Play ed ▁by : ▁A aron ▁McC us ker ▁( Series ▁ 4 – 1 1 ) ▁ ▁Jam ie ▁Mag u ire ▁is ▁the ▁oldest ▁son ▁of ▁the ▁not orious ▁Mag u ire ▁family , ▁the ▁son ▁of ▁P addy ▁( Se an ▁G ilder ) ▁and ▁M imi ▁Mag u ire ▁( T ina ▁Mal one ), ▁and ▁recently ▁returned ▁after ▁serving ▁a ▁ten - year ▁prison ▁sentence ▁for ▁m ans la ugh ter . ▁Much ▁to ▁his ▁parents ' ▁dis g ust , ▁he ▁appeared ▁to ▁be ▁reform ed , ▁rejected ▁his ▁family , ▁got ▁a ▁job ▁as ▁a ▁bar man ▁at ▁" The ▁J ockey ", ▁began ▁training ▁as ▁a ▁prob ation ▁officer , ▁and ▁became ▁engaged ▁to ▁his ▁J ockey ▁co - worker , ▁Kar en ▁Jackson ▁( R eb e cca ▁At kin son ). ▁Jam ie ▁has ▁a ▁t endency ▁to ▁sleep walk ▁on ▁occasion . ▁He ▁appeared ▁in ▁ 1 0 8 ▁episodes ▁in ▁total . ▁ ▁In ▁the ▁last ▁episode