For over 30 years, Cornelius has managed child protection programmes with UNICEF and Save the Children. He has been involved in advocacy that led to improved protection of children from sexual exploitation and abuse in humanitarian settings, reduced recruitment and use of children by armed forces and increased access of children to identity documents/birth certificate and social assistance. Cornelius represents UNICEF on the Advisory Boards of the WePROTECT Global Alliance to End Child Sexual Exploitation Online, ID4Africa, CPC Learning Network and Changing the Way We Care.

Mr. Williams is a national of Sierra Leone and holds a Masters from the University of East Anglia, UK.