Dery yɛ mmarinimfo a ɔkɔɔ suapɛn a ɛde University of Ghana wɔ afe 1977 bre a owie ntoaso sukuu a ɛde Navrongo Secondary School, na onyaa abɔdin krataa wɔ mmaranim mu a ɛde (LL. B) na wofrɛɛ no kaa Ghana mmaranimfo kuo a ɛde Ghana Bar no ho wo afe 1982.Ansa na ɔbeko mmarhye bagua mu wɔ afe 2008 mu no, Wɔpaw Dery se Aban mmaranimfo abediakyire wo afe 2003 mu. ɔsan nSo soom sɛ Soafo mprenu; sɛ Soafo a ɔhwɛ Atifi Atɔe Mantam mu firi afe 2004 kosi 2006 ne Soafoa a ɔhwɛ Atɛntrene so firi afe 2006 kosii 2007.