You can add a new person with the name "Onuorah, A. N. | Okeke M. N. | Dunkwu, Nnamdi C.", or you can "Onuorah, A. N. | Okeke M. N. | Dunkwu, Nnamdi C." with a person entry that is so far only been referred to by another name (such as a former name or an alias name).