    jentencé’ I: Martin; 58, will be’ freed  today” after” sérving two thirds: of -his five  ar: séntence’ for.'the manslaughter of T6-  jear-old Fred Barras :    Seritence 2: Mairtin served -two' thirds“ of a  five-year sentence for, the -manslaughter-. of    Barras and for wounding Fearon: :