You can add a new person with the name "Princewill, Sylvester Emeka Abonyi | Anthony A. Okafor | Odeh Calistus", or you can "Princewill, Sylvester Emeka Abonyi | Anthony A. Okafor | Odeh Calistus" with a person entry that is so far only been referred to by another name (such as a former name or an alias name).