▁allowed ▁except ▁under ▁certain ▁circumstances : ▁ ▁former ▁sp ouse ' s ▁desc endant ▁or ▁ancest or ▁ancest or ▁or ▁desc endant ' s ▁former ▁sp ouse ▁ ▁The ▁list ▁of ▁pro scri bed ▁aff in ities ▁was ▁reduced ▁in ▁the ▁early ▁tw enti eth ▁century ▁by ▁the ▁De ce ased ▁W ife ' s ▁Sister ' s ▁Mar riage ▁Act ▁ 1 9 0 7 , ▁the ▁De ce ased ▁Bro ther ' s ▁W id ow ' s ▁Mar riage ▁Act ▁ 1 9 2 1 ▁and ▁the ▁Mar riage ▁( Pro hib ited ▁D eg rees ) ▁Rel ations hip ▁Act ▁ 1 9 3 1 . ▁ ▁Pro ced ures ▁The ▁Mar riage ▁( Sc ot land ) ▁Act ▁ 1 9 7 7 ▁is ▁the ▁main ▁current ▁legisl ation ▁reg ulating ▁marriage . ▁The ▁Mar riage ▁( Sc ot land ) ▁Act ▁ 2 0 0 2 ▁extends ▁the ▁avail ability ▁of ▁civil ▁mar ri ages ▁to ▁" appro ved ▁places " ▁in ▁addition ▁to ▁Register ▁Off ices ▁and ▁any ▁other ▁place ▁used ▁in ▁exception al ▁circumstances ; ▁religious ▁mar ri ages ▁in ▁Scotland ▁have ▁never ▁been ▁restricted ▁by ▁location . ▁Mar ri ages ▁can ▁either ▁be ▁conducted ▁by ▁" author ised ▁celebr ants " ▁( us ually , ▁but ▁not ▁always , ▁a ▁minister ▁of ▁religion ) ▁or ▁by ▁an ▁" author ised ▁Reg istr ar ". ▁ ▁Both ▁parties ▁to ▁a ▁marriage ▁are ▁required ▁to ▁independently ▁submit ▁marriage ▁notice ▁forms ▁to ▁the ▁registr ar ▁of ▁the