▁ended ▁up ▁sp illing ▁them ▁across ▁The ▁J ockey . ▁ ▁In ▁Series ▁ 8 , ▁M andy ▁briefly ▁appears ▁as ▁an ▁appar ition ▁or ▁hall uc ination ▁to ▁comfort ▁her ▁mother ▁when ▁she ▁suff ers ▁from ▁ins om nia . ▁ ▁K atie ▁Mag u ire ▁Play ed ▁by : ▁L ola ▁& ▁M acy ▁Y ox all ▁( Series ▁ 3 – 7 ) ▁/ ▁Beth any ▁Thompson ▁( Series ▁ 1 1 ) ▁ ▁K atie ▁Mag u ire ▁( also ▁Gall ag her ) ▁is ▁the ▁daughter ▁of ▁Lip ▁Gall ag her ▁( J ody ▁L ath am ) ▁and ▁M andy ▁Mag u ire ▁( Sam anth a ▁S idd all ), ▁who ▁is ▁born ▁in ▁the ▁third ▁episode ▁of ▁the ▁third ▁series . ▁She ▁is ▁initially ▁believed ▁to ▁be ▁the ▁daughter ▁of ▁Lip ' s ▁half - bro ther ▁Ian ▁Gall ag her ▁( G er ard ▁K ear ns ), ▁who ▁is ▁secret ly ▁gay ▁and ▁M andy ▁pret ended ▁to ▁be ▁his ▁girl friend ▁while ▁having ▁a ▁sexual ▁relationship ▁with ▁Lip . ▁ ▁K atie ▁is ▁born ▁after ▁a ▁heavily ▁pre gn ant ▁M andy ▁is ▁knock ed ▁over ▁during ▁a ▁rob ber y ▁at ▁the ▁local ▁shop . ▁M andy ' s ▁protect ive ▁parents , ▁P addy ▁( Se an ▁G ilder ) ▁and ▁M imi ▁( T ina ▁Mal one ), ▁forb id ▁the ▁Gall agh ers ▁from ▁having ▁anything ▁to ▁do ▁with ▁K atie , ▁with ▁the ▁Mag u ires ▁intent